My new computer is almost complete. Im missing the key ingredient - a video card. I see that the G3 Ti200's come in two varities. One has 64mb on board memory and one has 128mb on board memory. Is it worth the extra cash for 128? Should I just wait until March when the G4's hit the shelves? Should I just get a G4 Ti4200 or Ti4400? What do you guys think?