The IS-7 excels at face hugging. No tank can realiably pen your front turret,and your lower glacias is protected. While on the other hand, other tanks have easily penned hatches, or in the case of the maus/E100 you wait till they fire, then back up slightly, pen the lower glacias, then continue face hugging. You can also face hug a T95 and easily pen the top hatches. I've done this to multiple T95s and they bounce every shot, while I can hit thier hatch no problems.
I also got my object 261 last week. Only holds half a rounds worth (7.5min) of ammo (18 shots) compared to the basically unlimited ammo the object 212 carried. The reduced blast radius does suck, and near misses now often result in miniscule damage. The improved accuracy is nice, however I seem to miss alot still, which really sucks. I've also bounced a few AP rounds, which with 360mm pen is very frustrating (not to mention the # of times I've done 0 dam critical hits with a 1100 damage round). So I still use HE mostly for the guarenteed damage, and AP reserved for TD mode. I still don't have my crew maxed (94% or so) and dont have the tracks/engines unlocked yet. Once I get the tracks/engine and 100% crew it looks like this tank will scoot around the battlefield nicely. I'm now wishing I got a T92 though. I already miss that 1m of explosion radius when tanks are grouped up. I couldn't imagine how much fun a T92 is on those occasions. The worst part about T8 arty is it seems to take MM forever to find a game for you, and when it does, it always seems to be an arty fest.
I've unfortunately been sidetracked from WoT by Panzer Corp. I at least bought around 3 million in needed equipement at half price for most of my tanks, but I didn't even get all my daily doubles in over the weekend. Once I get bored with Panzer Corp though, I'm sure I'll get back into WoT (until D3 comes out at least).