Been grinding a lot lately, and have a lot of new toys.
E-100 - Not a big fan honestly. 236 penetration on a Tier X gun is just sub par. The 340 (ish, can't remember) on the gold rounds is very nice, but I can't afford to load up on gold rounds all the time. The armor is decent, and it has a ton of HP, but the thing is huge and not very maneuverable. I don't play it a ton as I don't like it a lot. The sound of the top gun firing is awesome though.
KV-2 - With the derp gun, this thing is a ton of fun to play. What I most like about this tank though, is that it is the only tank that I can think of where it really doesn't care what tier match it is in. If you get in a tier VIII match, you just have to adjust your play a little bit. But I've been in multiple tier VIII matches where, with smart play, I've actually been the most damaging tank with over 3k in damage (should have taken a screenshot). That's what I most like about this tank. Every time I load up a match, I know I can make a difference. And it is inexpensive to run, for the most part. You only load HE. No gold.
ELC AMX - Just got this, and I haven't been doing great in it, but am getting better. I see this as potentially the ultimate troll vehicle. The match where I did the best, I drove around and got in the rear of the enemy. I'd drive up real quick, fire a round in a heavy's rear for about 200 damage, and then drive away before the turret could traverse around. After getting away, I'd wait a minute, then rush back in and do it again (maybe on a different tank). This thing is fun, but does take some skill to use (no turret and horrible aim time on the gun).
T110E3 - The TD right after the T95. I love the T95, and this thing is kind of like a faster version of it. However, against a knowledgeable enemy, it is actually more vulnerable. A lot of people will shoot your cupola on top, which is a mistake and will get very few pens. But your lower plate is much larger than the T95's and will get easily penned. Main superstructure has 305mm of armor, and is well curved, so that's a no go for most tanks. I like the machine. One of only two tier X tanks I have, and I like it much more than the E-100. The gun is fairly nice (295mm pen, 750 damage), with a decent rate of fire. Side armor is paper though (quite unlike the T95).