I absolutely love my 600, and I know that if Cammy drops in here, she'll show you plenty of photos showing you why they are so loveable!
I my self have the A604, Internal Flicker Fixer, Subway USB, Compact Flash IDE hard drive, 25Mhz 030, 32Mb of RAM (plus 2Mb Gfx of course), 8Gb Compact Flash and SD reader for the PCMCIA slot, MIDI box, DSS+ Sound Sampler, Genlocker, PS2 Adapter (emulates CD32 pad), Micromys PS2 Mouse Adapter...
...and I think that about covers it. It packs quite a punch for it's small size and I use it more than my A1200, even though the 600 can't compete with my A1200's 060, AGA, and other such features. I think it's the size that keeps me coming back.
Of course it is important to note that it cost me about $800 to put this all together.
The MiniMig and other such clones are starting to look attractive lately...