This is definitely the realm of things where a UMAX C600 would probably have been a better machine entirely for you. Also, the XClaim VR could do 24-bit 1152x870 in 1996 when the 6400 was new. I don't remember off hand when the 6360 launched in relation to that, so it's possible that it wasn't an option if this was a machine you built in 1996 or 1997.
250MB Zip in SCSI will pay for a lot of other toys given prices I've seen.
Fair. I'd stand by the thought that if Zip250 was needed for some reason, (especially for someone like you who doesn't like doing networking) then USB and running 8.6 would be an optimal way to get it.
Granted - if you wanted to stick with 7.6.1 or 8.1 because of the low RAM ceiling (128 megs doesn't go very far for running 9.1 and newer software) then an IDE card might be the better way to do it. Of course, you could also just stick with the stock Zip100 drive.
I probably have two ideal 6500 configurations:
1) 6500/300, 128MB RAM, USB card, CS2 ethernet, OS 8.1/8.5/9.1 (primarily for benching against my 8600/300 and G3/300, I extremely love the idea of a 3-way "300MHz in 1997" shoot-out.
2) 6500/275, 48MB or more RAM, Avid Cinema card, A/V kit, CS2 or PCI ethernet, SCSI boot disk and bigger/faster IDE disk for video capture or bit SCSI disk for video capture and CF upgrade for boot.
In an even more ideal world, I'd use either with the 15-inch Multiple Scan display, probably at 832x624 or 800x600, and just because I'm
that guy I'd probably not bother to run at 24-bit. I don't believe the stock a/v kit or the avid cinema kit captures 24-bit video, but I'd have to look.
Just for fun, this document details what the 6500's Performa Bundles were in the US:
http://personal.stenoweb.net/mag-pdfs/ApplePowerMac6500.pdf
EDIT: I believe there were a few other configurations, too. I have seen references, for example, to a small business /275 model with 48 megs of RAM and a 6-gig disk, if I'm remembering correctly, so this probably isn't the last version of this sell-sheet from before the machine was discontinued upon the introduction of the iMac G3.