Since you say you have the money and you can't SLI it, I'd go with the 7600. Thats is unless you have other addictions to tend to. I'm no expert thou.
Edit: another important thing to consider is power. My card takes a normal 4 pin connector (like to a HDD) whereas others take special ones. Be careful with that.
Opteron 175 + Scythe Infinity
2 gigs corsair XMS DDR 400
XFX geforce 6800 XT
30G Maxtor + 250G Maxtor
"Let's face it, we're not changing the world. We're building a product that helps people buy more crap - and watch porn." -- Seagate CEO Bill Watkins