lowest PSI I have on any road bike is 90 highest I believe is 110 and yes apparently my frame pump is cheap junk.. I'm not a racer but I do like to go fast and be back on the road faster when stranded but then again from the sounds of it not cheap junk pumps would be fine too.. do they make a holder for like a 4 pack of cartridges that can go in a pocket? and what's the one time cost on a frame pump you would actually buy for yourselves? Still torn here..