Hands down the best TD in the whole game. I'm not even talking tier-for-tier, I literally mean that it out-performs any TD, even those on tier 10.
The 560 alpha-damage gun on its own is already amazing, and combining it with a platform that has a rear-mounted fully rotatable turret (rear-mounted turrets usually aren't great, but optimal on TDs in my opinion) with great camo and viewrange makes for an amazing tank suitable for every situation. Obviously because of the lack of armor this tank will not be able to play on the front-lines but other than that, it can play a superb second-line support tank and if need arises, it can even snipe better than any other tank while still spotting for itself.
The 750 alpha-damage gun is alright too, but it trades the beautiful DPM and accuracy of the 128mm gun for alpha damage, which in most situations isn't as useful, especially since hitting enemies for 560 alpha-damage feels powerful enough already