Surely the A4000T has to be least popular, on the grounds that there weren't many of them made...
Failing that, the A600 would be least popular because they're silly. My first Amiga was a brand new A600 (upgraded from C64) back in 1992. I remember thinking I would have been better off getting an old A500.
If the A600 had stuck with it's original name - the A300, I believe it would have made a lot more sense. Damn the upper echelons of Commodore mis-management!!
Wouldn't that logic make the A3000UX & A3000T even less popular based on the number made. 8^)
For me there isn't a less popular Amiga, they all were great. I really miss the thrill of the old computer world where completely new computer models and operating systems seemed to be just around the corner. Now we all just wait for the next bigger hard drive and faster processor to come out and new versions of Windows.
I know the market is more mature now but I just wish there was really a new ground breaking company on the horizon to release a truly revolutionary computer/OS combination to the market.
However, now there will be multiple posts saying how it's impossible. While that's exactly what I'm talking about, think about how impossible the Amiga was when it was released. I really miss seeing the impossible become possible. Oh, well I better get back to replying to emails and checking the EMC backup jobs on my PeeCee.