What is your favourite amiga model ?
Both today when everything is available and in the context of when it came out.
Similar, which one is your least favourite ?
Back in the late 80's I think the A500 was my favorite because it was actually something I could afford with the proceeds of my Albersons grocery store job. I think I made a whole $3.05 per hour
My friend from school (the now infamous Columbine HS) had the A1000 which made my C= 64 look like a toy. So I knew I wanted the Amiga. After researching the differences between the 2000 and 500 I decided on the 500.
As I recall the machine was $550 or so from the cheapest mail-order vendor and I had saved that amount finally. I did not yet have enough for shipping, but I gave my dad the money and he ordered it for me. I'm like PLEASE! I'll have the rest of the money before it arrives...
I used it with a monochrome amber monitor and the only redeeming thing about that is I could run interlace mode with very little flicker. The mouse would leave trails though

I think the best ever was the 1200. The price was reasonable and the machine was really built to be expanded - IDE/PCMCIA/Trapdoor and the then unknown clockport.
The 4000 is probably the machine I feel is my least favorite - if I had to pick one.