I use a Fini AirBoss 120V compressor in my motorhome. I've been quite satisfied so far; it's sufficiently powerful to easily get tires to 80 psi in a reasonable time, and quite compact, and not nearly as loud as some small compressors (but nowhere near whisper quiet). It also was fairly affordable.
I've heard a fair few good things about the new(ish) little Harbor Freight Fortress ultra-quiet one gallon compressor, and it's also pretty compact. If I were shopping for an RV compressor right now, I'd give it a lot of consideration.
