I had a PACT, not the most expensive one, for years and it worked well. One day I plunked an 85-grain slug from a .32 top break into the rear sensor unit. (Ha, Ha!) Then I found I could not buy a replacement sensor unit from PACT. Had to buy the whole rack with both sensors for many bucks. Has anyone out there been able to buy replacement sensors for PACT?
I elected to get an F1 Chrony, since I am accident prone, but you have to buy also the remote control unit if you want to list individual shots and statistics. You will still be under 100 bucks. It is compact and very reliable if you keep it out of bright, angled sun, but the diffuser structure, three pieces of white plastic, four rods and two connectors at each end, is a PITA.