Partizan,it's the most all around effective along with izlom. If you play in a very green area or even a forest during the summer also check out KLMK suits,very effective in green foliage.
Berezka is just a more yellowy version of KLMK from what I can remember and doesnt look to bad at all. My Friend and I might just get two sets and mix them up a bit like a true Russian!
I will be using a Chicom chest rig and an NVA backpack with a AK 74M so hopefully I will look like an early 90's GRU member or something along those lines.