CUDA demo card Where can i get a cuda card to demo?

I do the IT support for a small production / post production house within a large company and need to get a demo card before we commit to buying 14 to 16 of whatever card we need.

we do HD after effects composites, HD premiere editing with 1080p video
3D studio Max animation etc

We need a video card recommendation and a contact that can send us a demo unit to use for a couple weeks.