Hi All this mame versions based on mameoX v.84b3. The coders have coded for some mame versions special features, (game-pictures,more memory support and so on.) 1.Mamedox Its a mame emulation for Xbox,that witch contains roms that you can use only with mamedox. 2.Mamedox Platinum2 Its a update from mamedox,with many roms that you can use only with mame- dox Platinum2 3.MameoX128Plus This Mame mame version support Xbox with 128MB&64MB memory The coders have coded some special features(Mame history,game history and so on) 4.Bender MameoX HSFII Edition. This is a special mame version for the game : Hyper Street Fighter II The Anniversary Edition (Asia 040202 & Phoenix Edition) 5.Mameox v.84.b3 Its an old mameversion for xbox. ________________________________________________________________________________ _________ In my opinion.......... I have Mameox128 Plus on my box. This version supports most of all roms(more than 5000 games) But witch version you prefer is up to you..... I think all versions have advantages and disadvantages mad.