Just got a shiny (literally) new Lezyne floor pump. Best piece of kit I have ever bought (sorry bike.) The screw on chuck means no air escapes no matter how hard you pump. I am embarrassed to say the hard tires I had before might have been as little as 45-50psi with my old hand pump. They are now a diamond like 115psi. Too many punctures on the way to work was worth £45, cheaper than the sack. But I have discovered it has cost me another way. My 18.8km round trip to work now only takes me 18.6km (?!) My tires are so well inflated that the diameter is greater and it takes less rotations to get in and out. This could cost me hundreds of kilometers by the end of the year and some long hours in the saddle rounding up to the nearest thousand kiliometers. Swings/Roundabouts.