IMO the perfect Amiga is as follows:
A1200 in original desktop case
030 accelerator (preferably Blizzard) with fast RAM on board
Compact flash to IDE adapter with 4GB card
PCMCIA compact flash adapter like EasyADF
Lots of WHDLoad games 
This is having gone through two basic A1200s upgraded to the max into towers, plus an A4000D similarly upgraded, and all sold and gone back to the setup above
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moto
Agree with you on that... That's the best setup, but I'm biased cause that's pretty much mine. ;-) For retro gaming and demos, the original 1200 with a Blizzard 030 is excellent. WHDLoad makes gaming (and demos) a breeze to setup and run. Even if you didn't want to do the CPU upgrade, an inexpensive 4MB ram expansion card will get you going for most games. Just maybe not all the demos, if you're even into that.
Only thing I'd add, if you have the coin, is an Indivision AGA card. It's an awesome upgrade. Being able to use any CRT or LCD VGA monitor makes life a lot easier. Not to mention it provides a very decent image too.
