A tank, of modest size, is of limited use at best for tire maintenance. The tank isn't large enough to put a large dent in the tire, so you're limited by the speed of the air pump regardless.
I use a Fini AirBoss, available at Lowes among other places, which is nice and compact, about carry-on bag size. It has a cut-out pressure of 135 psi and a cut-in of 110 psi, approximately; this may be a bit low for some tires and loads. It's quite compact and relatively quiet (which is to say, quite loud, but not EXTREMELY VERY LOUD).