Profec A is one of the best, but can only goto like 21-23psi. Profec B is a PITA to learn, but good upto 43psi and worked great for me.
AVC-R is a match for an AFC, but is pricey and some have had problems with the learn feature.
Never used the others.
Try:
www.dsmreviews.com
Wiz
Threaded Mode