I stopped by a church yardsale today and off in the corner was a Quadra 610 in almost perfect condition with a caddy load CD. The case was a bit yellowed. For $5 I took it home and it booted right up to OS 7.5. I added some ram and vram. It has a 250mb hard drive loaded with classic games like Monopoly and Microsoft Flight Simulator. I have a Quadra 660av board for it as well as the back case panel from a 660av I stripped for parts. I'm not sure if I should leave it stock or upgrade it. I have another working 660av already but it has a cracked case and is missing a hard drive, CD, and CD bezel. How about it, upgrade or not? :?: