When you buy one don't get sidetracked by the PSI rating, look at the CFM's(cibic feet per minute) you'll want the most you can get fot your money, cause if you get a 3 or 5 gal comp you'll have to wait for it to build backup,the small ones peterout after blowing for 30 or 45 seconds. also get yourself a blow gun that has a long narrow tip, it will maximize the blowing air.Here's a link for Harbor Freight,they have 6 stores in the state of NJ.hope this helps.
http://www.harborfreight.com/cpi/cta...emnumber=94667
http://www.harborfreight.com/cpi/cta...emnumber=97090