If you must have PPC and more then 3 Nubus slots a 950 with a Daystar upgrade is the easier to get (then you get 4 free Nubus slots). I did this for my AVID systems. A 9150 would be better if you needed tons of RAM since it uses more common 72 pin SIMMs.

TRAQ: How are the conditions in your attic? Humidity and heat/cool cycles are hell on plastics.