Honestly, I feel much the same, but there are some 6500 fans on this thread... And the 6500 is an interesting machine--not especially interesting to me, but the built-in subwoofer and video capabilities interest a number of people.
My interest arose because of my "smallest 7.6.1" computer project. I want PPC power, so a 6500 logic board seems the way to go, and to get the best performance possible, I need a G3/L2 upgrade. Of course a 500MHz, 1MB L2 upgrade would be better, but for $20 vs $100+ I'll settle for 400MHz and a 512KB cache which I may be able to upgrade to 1MB later.
Also, I think I'll be able to get the ram up to 160MB from 128MB. I have this 32MB EDO DIMM which seems to have exactly the kind of memory chips for which the logic board has pads...
That would still be kind of low for OS9, but for 7.6.1 I think it's probably plenty.