I just bought mine last week and I got the Shooting Chrony Beta master. Not a lot of fluff, but stores 6, ten shot strings, storing velocity for each shot and giving low, high, average, extreme spread, and standard deviation for each string. The master series has a remote display/control panel that's attached via a hard line (looks like a phone cable).
I hear the PACT's are really nice, but the price is what sold me on the shooting chrony.....
There again, I haven't had mine long enough to be much help, but so far so good. I've used it 3 times in the last week.