1. PCE (fully equipped) - I haven't had this one for very long, but I already have more games for it then anything else. I keep finding
more and more games I want. Every day I seem to find something new, like I'm digging in Santa's magic sack.
2. Saturn - I love this thing, so many good memories. Still actively buy games, but I have a shopping list, and its all I want to buy.
3. Genesis/CD/32X - The console I grew up with. Many great games, but there's not much more for me to discover with it.
I have what I want and thats it.
4. NES - Great system. Personally I find Nintendo has gotten weaker and weaker. Only system of theirs I actually like.
5. PS2 - PS2+PS1=many great games.
Honorable mentions belong to the NeoGeo AES (for its raw power), and PC-FX (for its sex appeal)