ST -Thanks, I think I'm gonna give the MAC a try. My compressor doesn't got to 80 PSI but even being able to set it at 40 PSI and adjust at the brush would be nice.
DoogsATX - Thanks very much. I hadn't realized the Grex G-MAC attached to the hose. All my AB's have quick connects so I'd only need one G-MAC rather than a MAC for each AB. Gotta get one.
Many thanks guys.