For my own use, practicing and doing drills--I've got an older CED 6000. Kind of clunky and the readout
font is a bit small, but really versatile, easy to review splits and set par times.
For club use at matches, the Competition Electronics Pocket Pro or Pocket Pro II is about all I see.
Super simple to operate, easy to read, and tough. I've got 8 of them at the club for out monthly
USPSA matches---and some of those are at way past 10 years old.