My 5600 Ultra is a BFG. Best Buy had this enormous price drop and it was $150 compared to $230 everywhere else, so I had to just go in and get it. I don't at all mind that it's slightly overclocked, it's not a big deal to me.
I've heard mixed things about PNY but never used myself, same with Asus and MSI.
eVga is probably the most reliable brand of nVidia graphics cards, they're always a good buy.