The most fun tanks to play (my opinion)
OI-Experimental: (collector)
The OI-exp has a lot of potential in terms of blocking, but you have to know some things, the first thing is, the small turrets on the front of the turret are easily pennable
by equal tier tanks, you can bait people to shoot the front of your hull as you can see on the image
OI-exp firing at itself
you are also able to sidescrape, just keep in mind your turret cheeks are pretty weak, and you will be penned if they fire gold at you, your cupola is pretty safe, i haven't seen a lot of people hit it when playing
you have two choices for the guns:
105mm:The 105mm derp gun has huge alpha 360 it's really good for the memes but the 290m/s shell velocity is crap, you need to relearn how to lead shots in it
or brawl which is what you'll be mostly doing (don't go sniping :/)
75mm: The 75mm has very nice standard pen, and is overall really reliable, if you want to be competive use it, it also obviously has more premium pen, than the 105mm
KV-13: (collector)
the KV-13 is a russian tier VII medium, this tank is like an IS and a T-34-85M had a child, here is it's armor :
this is it's armor when firing against itslef, you can bounce shots from tier VIII(unreliably) VII(pretty reliable) VI(pretty reliable) V(extremely reliable)
and this is its armor when a kv1 with standard rounds shoots at it
It has an 85mm that delivers 180 damage every 5seconds, it does not have very good pen, take at least 15 gold rounds to be sure (standard pen becomes useless at tier VII heavies and tier VIII)
you can also choose the same 122mm gun from the KV-1 with 140mm HEAT rounds, it's fun to use but you really have to play on medium flanks and get a top tier matchmaking.
You can reverse sidescrape really well as well, and the tank often reaches 50 normal and to 55 if you have a turbo.
the bad part of this tank is it's 5 degrees of gun depression which is not ideal, but you can learn to counter that
Pz III/IV: (collector)
The Pz III/IV is a german tier V medium, this tank is really good, you have a balance of everything, trollish armor, a pretty good 75mm gun extremely good mobility (really mobile, can reach 60 you could theoretically reach 62.27 but its full cope equipment) a very good ramming capability, however it's difficult to make the armor work, let me show you
i don't recommend sidescraping with this tank, you can either, peek sideways or get hulldown, keep in mind your turret is extremely weak apart from HE and sometimes HEAT
This tank is literally the peasant version of the PzV/IV XD but it's faster than it so it's got advantages and disadvantages, same gun as well
M4A3E2 Sherman Jumbo: (collector)
You might start seeing a pattern, the Sherman Jumbo is an american tier VI medium, mediums with armor, they're fun because you can be flexible and fight, you also give a very high advantage to your team by having armor as a medium, this sherman is the same as the E8 but with a lot more armor, and slower, weirdly enough, on this tank, the stock turret is much better, more armored, most people choose the stock turret with the derp gun, but if you get in a bottom tier matchmaking you're not going to do well with a 105mm with 103mm of pen...
stock turret: (same pen)

top turret : (same pen)

You can angle like this :

but if they fire gold well...

this is against itself, against lower tiers you can't even imagine how powerful it is, it wrecks lower tiers, just one thing is, don't angle your hull too much to the side or they will pen your side very easily
VK 30 01 D: (collector)
The VK 30 01 D is a german tier VI medium, this tank was a continuation of the Pz III/IV back when they were still in the tech tree, it gets 135 alpha, which can be underwhelming, however it can now reach 65+ km/h it's also a much better rammer, you can get 400-500 damage rams and maybe even more, i haven't played it enough yet.
it does have less armor for its tier, but people could still bounce your cheeks or the side of your hull, overall great tank, just fragile, you can use the same technique as with the predecessor of angling your hull, less effective tho.

it's also,(surprisingly) able to reverse sidescrape, but beware of the turret cheeks like the maus

BZ-58 : (tech-tree tank)
We're looking at the BZ-75 line, which got a really nice tier XI, this line is pretty average however the BZ-58 is really fun to play, you get very good armor, on the turret and upper plate, the lower plate is weak but that's to be expected
this line is the most fun i've had in a while, the 3 boosters make you very flexible and you're able to go to medium flanks easily, it's also really fun to push others, one game we had a train of 5 tanks pushing a O-Ho together, it was hilarious, anyways, you can sidescrape
you have a light sliver of a pennable line but it's hard to hit, this is the only tank of the line that can sidescrape apart from the tier X and XI, it also has really good gun depression, 10°
Jpanther II : (collector)
The Jpanther II is a tier VIII versatile TD, it's very similar to the ferdinand however it gets much better armor than the ferdinand, on the superstructure. The ferdinand has medium armor all around the tank, compared to the Jag who has no hull armor but around 300mm of armor on the superstructure hull down
The grind is long, but at the end you get the same gun as the ferdi 490 alpha 245 standard pen and 311 premium pen, you can also drive towards someone and turn the hull to the side to ricochet.

IS-3-II : (tech-tree tank)
The IS-3-II is a tier 9 russian double barrel, it gets god like turret armor and trollish hull armor, you can reverse sidescrape
You have an enormous potential to go hull down, one game I was bouncing Breaker gold rounds, the tier XI IS7 etc... it's a beast if you find a hull down position
You have a choice between a 100mm and a 122mm, with the 2.0 update the stock gun got a big buff getting 320 alpha instead of 300 it also has better dpm and better accuracy than the top gun, right now im grinding through it and the grind is really fun, absolutely incredible tank it's also very fast, i was going faster than the chinese tier VIII when he has boosters on XD (im using exp turbo)
Rest coming soon
Trick4Funz' Den