Here is my official list of the worst Amiga's - and why they're so bad.
1. A1000 - Yes, it was the first and all, but imagine loading a Kickstart disk every time you turn it on.
And, obviously there is crap expansion.
2. A600 - About the upgradability, and crap keyboard. Need I say more?
3. A500 - Better expansion than the A600, but still not good enough.
4. A1200 - Technically better than the A500 (but then, it did come later...), but still crap expansion, and a crap case.
I hope you enjoyed this list.