I bought this little Topeak RaceRocket HP pump about about seven months ago on the recommendation of someone here on BikeForums. I have not had to use it yet, but this morning I tested it at home. I was able to get to 110 PSI without a lot of strain. I use to carry the Topeak Road Morph with gauge on my road frames, but they were just a little too long and bulky for my taste, even though I could get to 120 PSI on them without issues at all

So, I recommend this little pump if you are looking for one that is small, works very well, has a little clip that fits under a bottle cage or that you want to carry in a jersey pocket,.

My strategy on flats is that I carry one extra tube, a Genuine Innovations AirChuck with two CO2 cartridges, a Park Tool Glueless patch kit set and the Topeak pump. The Topeak to shape my tube, look for hole so as to find if culprit is still in my tire, then inflate to 30 PSI or so, then blast to full pressure with CO2

TopeakŪ Cycling Accessories ? Products - RaceRocket HP, black

Oh, forgot to mention that it rattles where the piston barrel joins the body when riding (when pump is clipped under your bottle cage) , and my solution was to wrap a little bit of electrical tape at that joint, and all is well.