I... I... I have to decide?! Are you trying to break my mind or something?
I don't know. I don't think I really have a favorite console, I have too many to pick from... only a favorite computer, IIgs... but that's not what you asked...
Amiga > IIgs in general.

But I love the IIgs sound chip. Exact same thing as the
Ensoniq MIRAGE. I wish somebody WOULD make IIgs software that emulates a Mirage, because $50 on ebay for a IIgs is a lot better than $500+ on ebay for a MIRAGE. It could be argued that the DOC is more powerful than Paula, but we won't get into that here.
EDIT: Here's some Mirage demos:
http://youtube.com/watch?v=3T1bmvRBcqghttp://youtube.com/watch?v=0S3MizD39fkAnother interesting IIgs fact: it was one of the main development computers for the SNES.
http://patpend.net/articles/ar/sil10.html