Persianxballer, its safe to say that at this time either one is fine. PCI Express still has alot of time to completly take over. Dont forget we still cant even utilize PCI Express. Its the same deal with 64 Bit processors. Once we really start using PCI Express, at that time AGP would really compromise your system. Myself, im getting an AGP pretty soon.
Generally, its all up to you. Witch ever one you would rather have. AGP is still good, and still offers some of the best cards.
Finished With TF.