I think the tiger P is also quite nice, though it is a tank that is even more important to face. 200 mm frontal is quite good, but the sides are very weak comparatively, more so than with the KT.
And I know what you mean about the T32, it is great hull down, does damage, and has better all round armor than the t29/t34. Main downside is the lack of higher penetration with the 105 it gets.
I assume your KT is fully upgraded, but if not, some tips: get the turret asap. You will need the tracks first though, and the 88 is fine till you get the long 105. Also, do repair first, then probably firefighting. It is not easy to hide it with camo.
Remember to face, and that includes the turret. Hencshelturm has 185 mm frontal, very hard to pen from the front. Sides are a big weak spot on either turret.
Also, I find my performance depends greatly on matchmaking and what map I get. I usually play heavies/TDs, so open arty maps are a pain.
On a side note, I heard the 4502A really sucked, and the specs kinda point to that, especially with the lack of a better 105. Good to hear you like it though, I may grind past it to the 4502B and maus yet. I had a 4502B in beta btw, it was really tough, but I didnt get the 128 before reset :C