I never really got the Anti-A600 movement. Even back in 1992 it seemed like it was just angry a500 owners looking for something to take their anger out on.
I got an A500Plus for Xmas 1991, but as soon as I saw the grainy photos of the A600 in Amiga Shopper in April 92, I craved one.
I eventually got an A1200 but finally picked up an A600 from eBay afew years ago. Basically you're getting an A500 but with 1/4 of the footprint ( the a500 design wasn't great) with a built in hard disk/CDROM interface (cost about £400 to add one to the A500) surface mount chips were much more reliable, plus thanks to PCMCIA it worked with future A1200 peripherals.
I personally think the A600 is a much nicer and better value machine than the A500.