Here is how I rate them:
1) Forged in battle. Very nice and lots of detail.
2) Battle Front. Not bad models but lack detail.
3). PCS. Not the best but okay. Plus I have a ton of them.
Forged in Battle T34's
These are early T34 with add on armor
Very early battle front T34
The PCS T34 I need to find what file I put them in.. Looks like I need to purchase some Forged in battle T34/85'd