My favorite PCI mac is the 9600, 8600 a close second (same case). It took me close to ten years to snag a 9500 and 9600 (6 slot macs) and oddly enough I got them both super cheap at a local recycler otherwise I would still be looking. No idea how rare they are, but I never seen any around here and people tended to keep them.
I have a couple 7500's both with G3's and they are ok. My first frankenmac was a stock 8500 I got a ten years ago that I pumped up the RAM to 256MB added a new G4-400/1MB got an IDE card and an Ultimate Rez video card and a USB card. Still have that machine (Rage 128 video card now and 700MB+ of RAM but the rest is intact), but it was retired as my main utility mac when I got a B&W G3 some years ago which was retired for a Quicksilver last year.
I also liked the Biege G3 tower in my lab which I still use when browsing on the web for info. The Beige 7500 to Beige G3 were some nicely built and very upgradable machines, every collection should have a few for OS 7/8 use.
I have a couple 7500's both with G3's and they are ok. My first frankenmac was a stock 8500 I got a ten years ago that I pumped up the RAM to 256MB added a new G4-400/1MB got an IDE card and an Ultimate Rez video card and a USB card. Still have that machine (Rage 128 video card now and 700MB+ of RAM but the rest is intact), but it was retired as my main utility mac when I got a B&W G3 some years ago which was retired for a Quicksilver last year.
I also liked the Biege G3 tower in my lab which I still use when browsing on the web for info. The Beige 7500 to Beige G3 were some nicely built and very upgradable machines, every collection should have a few for OS 7/8 use.