Depending on where you are Creative Outdoors in Markham has a lot of BDUs. No online store, just Edward and his wife in this tiny place with tons of stuff. You can email him specifically with what you are looking for at
creative.outdoor@gmail.com.
I remember seeing some Russian camo when I was last in, the funky blue/black tiger stripe pattern. I'm sure he has what you want provided it's not too exotic.
As for brands I'd stick to stuff like Tru-Spec and Propper. I have some Rothco stuff but they seem really cheap.