I would recommend the EVGA GTX 570 (in either regular or superclocked editions). They're priced around $240 and they are WELL worth their money. I played Skyrim in 3D (I have a 3D monitor and use nvidia 3D vision) on or near max settings (but before the texture mod was released).
In 2D, you should have no problems maxing everything out (or getting close to it). The GTX 570 will SLI very nicely, and if you buy EVGA's editions ending in -AR (NOT KR) you'll get a lifetime warranty IF YOU REGISTER WITH EVGA WITHIN 30 DAYS. You MUST register with EVGA within 30 days of purchase to get your lifetime warranty!
EVGA is reknowned for having the best customer service in the business. They offer step up (agree to turn your current graphics card in within 90 days and they'll sell you a newer graphics card for the difference in price), and they do cross shipments (they will ship a replacement if you need to return an item while you package and get your return ready to ship to them). EDIT: Please note, you have a PCIe 2.0 controller in your 2500K, if you purchase a GTX 670 you'll be bottlenecking the GPU with your CPU because the GTX 670 is designed for PCIe 3.0.
Even if your motherboard has a PCIe 3.0 slot your CPU doesn't process PCIe 3.0 - this is a physical limitation of your CPU and cannot be fixed with a BIOS update or driver release. Your CPU will never run at PCIe 3.0 speeds.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.