I've read that you'll only notice a difference with games that use 32 bit texturing or something like that. My philosophy, no one ever had too much memory. I have the 32MB G400 and I'm really happy with it.
I have the 32mb Max Dual head and am just in love with this card. The 3D is acceptable (but not as fast as my V2 sli) and the dual head feature works great. I'm running a 19" Optiquest and A 17" VeiwSonic on this card.
Mek freinds wit da devil dat wehs ya knows what he's up to. - Bob Marley