Amiga 1200: Because it's nice, everything I want under a keyboard, special design. The best solution for games right now.
Amiga 4000: My main system I use now for my hobby and work. Still great and very expandable.
Amiga CD32: It's an A1200 but comes with built-in CD-ROM, thus some games especially written for CD32 are great, not to mention the S-Video output that I've connected the CD32 on my Sony 50' LCD TV. Still great and fun to insert-cd-and-play. :-D :-D
Amiga CDTV: I think the most "cool" Amiga of all times. This machine's position stands for the living room, not in bedroom. Oh, when I look at it, it's brilliant. Even sitting down and using that wireless remote controller. ;-)
Great multimedia CD-ROMs too.