I have owned at least one of every Amiga model ever produced, and my favorite is the Amiga 2000. I also like the Amiga 500. I have owned several Amiga 1200 computers in like new condition, with their original boxes. They were very low quality, poorly made crap, so I sold them. I owned several Amiga 4000 computers, also in like new condition. Again, very low quality and poorly designed crap. Sold them too, before I started having problems with them. Do not even get me started on the Amiga 600 junk. The only zorro 3 Amiga I like is the Amiga 3000, but, it has major design flaws too, and the quality is not as high as the Amiga 2000 or the 500. Remember, the most popular and number one selling Amiga model is the Amiga 500.
PERSONAL EXPERIANCE: I always have problems with "surface mount" Amiga models. I almost never have problems with the "thru-hole" Amiga models. I never have any problems with Workbench 1.3 to 3.1. I always have problems with Workbench 3.5 and 3.9. I think it is because these particular Workbenches were NOT done by Commodore, but by greedy jerks that just wanted to continue making money by bringing out "newer versions" of the old Amiga OS.
SUMMERY: Amiga 2000 or 500 with KS / WB 1.3 to 3.1 equals almost no problems, works great. Anything newer, nothing but problems. So, you decide which is the best Amiga models, and BE HONEST (do not let personal ego interfer with your judgement).
Damned straight.
I just upgraded my A2000 with an '060 and Picasso II. Loving it. It is my favorite Amiga. Number two is the Amiga 1000. I bought the first one sold in the state of Virginia, USA in October 1985. Still have one. Love it.
My tower A1200 '060 has given me trouble after trouble...
bp