SRAM PG-950 9 Speed Cassette 2013
Reliable and durable cassette technology. SRAM's cassette performance is optimized through tooth profile and shift ramp design for quick and positive index shifting.
I bought this cassette for my lower level starter bike, which I've put about 600-750 miles on. There's really not a better cassette for the money, and buying last year's model gets you more savings. Very happy with this purchase. Shifting is crisp, works with SRAM and Shimano derailleurs, and looks nice and shiny still.