Hi guys,
Thanks for the replies.
Bart, they are both Dragon kits, the T-34 if I recall correctly is the 6205 model and the JSU 122 is the Cyber hobby orange box thingy 9112, the 3-in-1 that Aaron mentioned. Both have a few after market bits on them but not so much the 122.
Aaron, I avoid the boxed plastic tracks like the plague, I know some of them are really good quality but they just don't cut it for me. I reckon that if a model is worth doing it's worth doing right and I say you can't beat the natural sag from metal tracks. The T-34 has the plastic after market ones, a bit fiddly to assemble with all the tiny pins but not a bad result, although they will be replaced with metals in the near future. The 122 has Friuls as you can probably see by the saggy bits.
Cheers guys