Well, I was a Boy Scout, so the idea of "Be Prepared" is not lost on me. But I guess a spare, bottle jack, tire iron, and TPMS, on top of a AAA membership, seems prepared enough, without adding a professional flat fixing kit and $250 compressor (that I don't have room to carry, anyway).
In fact, I don't even spring for the deluxe AAA membership. Yes, I'll pay more if I actually have to use it, but I also tend toward a skeptical view of insurance in general. I insure for disasters I can't afford, not annoyances that I can. How often am I likely to have a flat? How many years of guaranteed higher insurance premiums would I have to pay to get that discount, if I someday actually used that insurance? I don't carry AAA because I can't afford a flat. I carry it so that I'll know who to call if I have one.
But maybe I'd feel differently if I boondocked a lot. And I'm still interested in learning what people think is the best small compressor. I just don't feel a need to carry it on-board.