can't decide, need help

Hey guys, I'm having trouble deciding which upgrade will be my next, so I'd like your opinions before I order my new parts this weekend. Right now my system is
Asus M2N32 SLI deluxe
AMD X2 AM2 3800+ 2.01 GHz
Patriot DDR2 800 4G (3.5 cause of xp)
XP Pro 32bit, Probably going to try out vista 64bit soon
EVGA 7950 GT KO 512MB
and I'm trying to decide if I should upgrade my processor first, or my video card. I can only do 1 at the moment
If I go the processor route, Im going to get the AMD X2 6000+ which is a 3.1 GHz processor, $92
or for the video card, it's a throw up between EVGA's 9800GT or their 9800GTX
If I go the VC route, is the GTX really worth the $50 difference? After rebates and selling my old card, the GT would be cheaper than the processor, and the GTX would be about the same price as the processor. Whichever one I choose I am definitely going to be getting another for SLI in the not too distant future cause these couple of things are the last things I'm going to upgrade in this rig. I want it to last for a while longer, but I'm not going to put too much more money into it as I'm going to build a whole new comp in a few years
anyway, thanks for any help I may get, oh and here are links for the 3
http://www.newegg.com/Product/Prod [...] 6819103272 processor
http://www.newegg.com/Product/Prod [...] 6814130384 GT
http://www.newegg.com/Product/Prod [...] 6814130376 GTX+

Overclock your current CPU, your 3800 will overclock pretty well. You should be able to get at least 2.4 out of it on air, and with a good cooler, you might be able to go 2.6 or even higher.
Buy the GPU first.