I have a 110 volt tankless compressor from Sears. I allows me to adjust pressures on cold tires vs hitting a truck stop and guessing. I find it most useful in making large changes in the truck tires when going from 50/55 psi normal run around to 70/70 psi for towing at the start of a trip or leaving an extended stay site. I found the 12 volt compressors I used took forever. This one is relatively fast and very compact for tool box storage.
2001 Ford F-250 PSD, Line-X, 3 ISSPRO gauges, TTM, Cyclone Fan, pulling a MobileScout 30RKS (loaded), Maxxair, Honda EU 2000. USAF retired.