I'll second the Masterflow, i have two of them. For the price, they are the best deal out there by far. They're selling them at Costco now for just under $50. Just be aware that it needs to connect directly to the battery, not through the cigarette lighter adapter. That's actually a good thing, most of the ones that connect to a cigarette lighter have weak motors, which is why they don't draw enough current to blow the fuses. This one draws a lot more current than those junk air compressors. Make sure your engine is running, cuz I've had it drain my battery enough to need a jumpstart after using it for a while.