If I could afford SRAM stuff for my non-racing use, I'd probably consider the purchase. I think 4,000 road miles is fine for the $65 I paid for the Nashbar cranks. Speaks for itself as far as wear, and there are no shifting problems. I'm looking for longevity and durability, and I got it. We all have different needs, just sayin' the OP may want to consider the Nashbar cranks if this is for recreational use. Also don't mind the ISIS - cannot tell the difference from other technologies, but then, I'm just a long distance/tourer/recreational road guy/commuter