Wow, religious fanatics are funny... Amigas were awesome computers in their day (which ended 12 years ago). They're still lots of fun as toys and have lots of nostalgia value. However, the people who are shouting rabidly about how Amigas are sooooooooo muuuuuuuuuch betterrrrrrrrrrr than [insert other things here] in this thread kind of remind me of 45 year old guys with long thinning hair and worn out Anthrax tshirts complaining about how any music aside from 1980s metal is "lame." Nostalgia is one thing, but desperate clinging to the past is kind of sad. There have been plenty of computers made since the Amiga which are cool, and substantially better than Amigas. That doesn't lessen the value of Amigas. While I'm sure that had Amiga survived, modern Amigas would be way cooler than most other modern machines, that didn't happen and there hasn't been a new Amiga since Escom's version of the 4000T (unless you want to count prototypes like the Walker).
If you don't like SGIs and don't want one, don't trade for it. There's no reason to sit here like Grumpy Old Man {bleep}ing about how awesome the past was and how everything else sucks.