Damn they won't let me give 1/2 stars so I'll vote 4. But it's actually 4.5. The ONLY thing I don't like about it is that the coupe at the back where you store it (and that's the crux of the problem) is too small to accommodate both the 110v cable and inflation hose. It's hard to put it there. I suppose they might as well have a digital readout since the dial gauge is pretty small and it's really impossible to tell exactly what the dial is saying at more than 3psi or so. But otherwise I like it. I used this to inflate my new boat fenders and it was surprisingly quick and my bike has fat tires. I really like that I can use it inside or outside the cat. Dual power supply is a brilliant idea. It is great! Get one.