BDS, OME, Zone, Currie. All are pretty popular. Its more along the line on how much are you willing to spend and what you are doing with it. BDS is good stuff at a good price but not top of the line. Zone is a favorite of College kids, there sister comapnys with BDS so good stuff but even a better price. Old Man Emu (OME) Great stuff but you pay for it as the same with Currie.
I personally like BDS, they have a great warranty and customer support. Plus the price is good.