I have Nvidia GTX 760 and I'm also very pleased with it, just watch out as there are a few version of the 760 with a few different memory options as well.
If Tattie posts on this thread he will say the ATI have the edge at the moment but it's not true, Nvidia all the way
As for 200fps in Reloaded, you will not achieve this unless your level is very simple or you set everything to low, you may get 60-80 fps on a well designed and thought out level but again this will depend on the overall spec of your build.
HTH
PC - Windows 7 64bit, Intel i5, 12Gb Ram, 1TB WD Black, Evga Gefore 760gtx 2GB
Laptop - Windows 8.1 64 Bit, Core i7-3632QM processor, 8GB of RAM, 1Tb Hdd, Nvidia Geforce GT 740m