Keep 3? That's not too hard (although choosing between PS1 and PS2 is extremely hard! )
I'll be keeping the PS3, the Slimline PS2, and the Wii
PS3 - Kickass online gaming and the best HD gaming experience you can get, along with a buttload of features. I assume by then all games Sony makes for it are out? GoW III, GT5, Resistance 1&2, Killzone 2, Ratchet and Clank Future, Uncharted 1&2, Quantum Theory, WKC, VC, Disgaea 3, MGS4, Demon's Souls, Call of Duty 4, Tekken 6, FF 13, Armored Core 4+all good multiplats, Heavy Rain, Heavenly Sword, FFvXIII... you can't go wrong!
PS2 - The greatest library in history, you can play till you die and you still won't be done. (do I have PS1 titles if I keep it?)
Wii - Good games are already out, innovative, VC, GCN BC.
/IMO
