I've only heard of Centramatic making the wheel balancers. Those are very good so I would expect if they are making an APU now it's probably also good. I have a Willis which is a top end unit that I'm pleased with as well as a Rigmaster which so far is good also. I'd also consider Blackrock if I were looking again and wanted another 'suspect'. Good luck.
Leo Bricker, 73's K5LDB, OOIDA 677319
Owner, Panther trucks 5508, 5509, 5641
Highway Watch Participant, Truckerbuddy
EO Forum Moderator
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Support the entire Constitution, not just the parts you like.