sadexcuse4s10
+1y
I've always had good luck with viair 480's and 450's. The 480's are super fast when you run 2 of them on the 165-200 switch that comes with the dual pack.
as for bags, I've used contitech and airlift and both have held up very well for 50k miles on each truck.
for valves, the classics still work great, parker, SMC, Sirai, ART, asco
the rest is pretty much a given, DOT airline, parker, SMC, swagelok fittings, and the switches are the same for juice or bags.
also, use the green gas teflon tape to seal everything, it's thicker than the cheap white shit