I have the pact xp. It works fine for me, but I have no other to compare it to. You can down load a program from there web site and feed your results from shooting into your pc for getting a better handle on the days shooting. The down side is not usb compatible, they should make a cable available for usb attachment. I have to use my wifes older pc. They do have a excellent customer service dept. I also own the pact scale and powder dispenser, which lead me the buy the XP.
Jim