I guess I've had enough Amiga computers to form an opinion. (1000, 2000, 500, 2500, 3000, 3000T, 1200)
1000 = I had this first, it made me fall in love with Amiga
500 = learned how to make music with MED and draw with DPaint (all at 7.16 MHz even!)
2500/2000 = Using this you can feel the stability. It feels like metal instead of plastic.. if that makes any sense
3000/3000T = My 3kT is the fastest Amiga I've ever owned (040/40). Also has gfx card (Picasso II).
1200 = By far most versatile, I used this for 3 years to surf the internet. In 1998 I got surprised looks by friends at how much faster the 1200 would download and render a webpage than their PCs!
I would say the 1200 has been my favorite overall.