Timers are all about the same cost. The ones used in competition shooting are the CED 7000 (which can remember up to 10 strings), the PACT club timer (release trigger button, I don't care for it), the Competition Electronics Pocket Pro, and the Pocket Pro II, and the RUREADY timer (also a release trigger). Most of the time I see the CED 7000 because it is very small (requires a reset for each string) and the Pocket Pro II because it seems to be the easiest to run.