Is there an appreciable difference between Marvell vs. Sandforce?

I find a lot of inexpensive Sandforce drives, and while I've read of some minor differences, is it really something to be paying more attention to?

My primary usage, should it prove relevant, is going to be getting a larger one to stick my games on. I think both of the current SSD's I've had are Marvell, but I really don't know if there's an appreciable difference. Thanks!