I've been using sram since 2007- first force and then red. At least their shifters and rear derailleurs- that's about it. I tried a force FD for about a month, then switched to a lighter and more reliable campy chorus FD and I've been using that one since (no issues). I never used a sram crank so I couldn't help you there, but it seems as if the FD has always been sram's weak link.