Road Morph G or Lezyne Micro Floor Drive with gauge. Both pumps will work with Presta and Shrader.

The Lezyne threads onto the valve stem. If you have removable core Presta valves, you have to tighten the core first with a wrench, otherwise the core stays in the pump chuck when you take it off the valve stem.

Road Morph G has a little knurled threaded piece on the chuck that can fall off. Toppeak told me that was not covered under warranty and I had to pay for a rebuild kit and shipping to get that little knurled piece. So, make sure that it is threaded on tight enough. I have seen this pump in stores where that piece apparently fell off before the pump even got to the shelf.

Of the two pumps, teh Lezyne is slightly smaller, slightly lighter, costs a little more, has a longer hose but has a smaller handle at the top that you push on. I suspect that the Lezyne may need about 10 percent more strokes (a guess) due to smaller size. And since the Lezyne is threaded on, it takes more time to attach and remove.

I prefer the smaller bore pumps more than the larger low pressure high volume ones. If you are using a 38mm tire, that does not take as much air as most mountain bikes that might run 2.0 or wider, so I think you would be happy with the road version. I run over 80 psi in one of my 40mm wide 26 inch tires, so I want the higher pressure road version instead of the low pressure mountain bike version pump.

These pumps are expensive, I usually leave it in the pannier to avoid theft. I usually carry the Lezyne on a tour due to the smaller size.