I have a "Master Flow Tsunami," which works pretty well. I picked it up on sale for $50 at a GI Joes (some of my friends found it for $25 at Baxters auto parts), the MSRP is about $70. I use it for airing up my tires after a day of Wheel'n and I've been quite impressed with it. I've heard rumors it can outperform some Viairs or other more expensive compressors. Bottom line is this compressor is a good compromise of cost and function.