Help choosing Graphics card

Well im building a new coputer and im having trouble deciding on a graphics card.

I can get a 7900 GS Ko for 189 Canadian
or
I can get a slighty used 7900 GT for 200 Canadian

I would get the used one now if i did decided on it or if i went with the 7900gs i would wait till i ordered all my other parts in about a month when i get all my money together.

So which one should i go with? Would prices on cards in the next month or so go down much? Or can i get an even better card for the same price.

I second what Cleeve said. To answer your last question, for 190$CDN I don't believe there's a faster card than the 7900GS. The lowest priced X1950Pro is at 207$ at directcanada.com and is about the same value. I don't think it beats the 7900GT though.

Just a side note, the cheapest X1950 ROs I've seen in canada were $250+, I didn't know you could get them for $207. That makes things a bit more complicated, although you'll be paying tax on the PRO you will have a warranty which is good...

WAIT Until you have a system to put the car into for sure. What if you shelf the card for a month, then it turns out to need an RMA? (if its used, your screwed)

I would wait and pick a card when you get the rest of the system.