This Porter Cable CMB-15 has been my favorite since we got it for our 5th wheel. I kept it because it does 150 psi, whereas our on-board air stops at 110 psi.
Porter Cable CMB-15Regardless of what you get, compare CFM! You can sure waste a lot of time waiting for your compressor to recharge the tank if is is a low flow. If I remember, this Porter Cable recharges from 0 in about 30 seconds with it's 2.0 SCFM.