Ahh jeez

I'd really avoid the switch if you can, its just a ball-ache in any format from max to maya or vice versa. FBX tends to drop alot of stuff, but the biggest factor is going to be scale, its an arse!

We recently had to get a load of previz stuff from max to maya, and the whole deal was just a pain in the butt - stuff went missing, from polys to file paths and all that.

As for modelling for game purposes there is no difference as such in the modelling, I think its a bit pyschological there for you. A mesh is a mesh is a mesh at the end of the day. Dont get tagged with a bad workman always blames the tools LOL

cheers
Jay