Whats for me? Videocard?

Hey, what is a very good deal for a videocard for around $100-$125 dollars. Slight preference for Nvidia, though ATI is okay if its a really good deal. Needs to be at LEAST 675 mhz for core clock, and at least 512 mb of memory. I use PCI Express 2.0x16. Newegg is preferred! Easy 10 points if i use your videocard suggestion, or if yours is most helpful!! PS: i am using a ATX mid tower case, make sure it fits!