I've a EVGA 8800GT Akimbo Superclocked edition. 1 yr warranty still left (I just found out it had 5 yrs warranty!)
It costed me 14500/- and I'm ready to give you at 2000/- Do let me know it fits your requirement.
Oh, b/w this says my card is still better than HD5450
GeForce 8800 GT 512MB vs Radeon HD 5450 – Performance Comparison Benchmarks @ Hardware Compare
And another with 5570
GeForce 8800 GT 512MB vs Radeon HD 5570 – Performance Comparison Benchmarks @ Hardware Compare
5570 seems a bit better though.