What are your recommendations for a AGP card in the $500 range. The two I'm considering right now are a Quadro FX 500 and a GeForce FX 5900. Alot of 3d programs(Maya,XSI, Solid Works) offer realtime hardware shading with Quadro FX cards has any one herd anything about Houdini offering this? If there not how about a Quadro4 980 XGL as they are now under $600