Topeak RaceRocket HP. Best buy at only around $25, best ergonomics by far. Get the longer HPX version for more oomph per stroke.

Pros:

• It can pump to full riding pressure. Takes more than 200 strokes and some arm strength.
• Useful short hose
• Presta or Schrader with a quick adjustment
• Great ergonomics
• Soft, grippy rubber cover
• Rounded plastic end caps
• Smooth stroke
• Reliable -- I've used it many times for my hybrids with Schrader vales and road bike with Presta
• Lightweight and short enough to stash in a jersey pocket, or jeans back pocket
• Outstanding value

Cons:

• Valve tool is useless, soft plastic

I've tried the Lezyne and others and also own the Blackburn Core Slim. The Core Slim has a longer stroke but the sharp metal end caps make it painful to pump to full riding pressure -- same problem with any mini-pump with sharp metal end caps. I have to cushion the end caps with my gloves or a bandana.

No such problem with the Topeak RaceRocket. It's almost a pleasure to use, if a mini-pump can be considered "pleasurable" for anything bike related.

Blackburn Core Slim pros:

• It *can* pump to full riding pressure. But it'll hurt.
• Same rubber hose as Topeak
• Useful valve tool, built into the metal end cap
• Longer stroke, a little more efficient
• Well made, good looking, feels like better quality than the Topeak (but there's no practical difference in quality)

Cons:

• Presta only
• Sharp metal end caps make it painful to pump to full pressure. Use gloves or bandana to cushion sharp end caps.
• Heavier

I paid only $15 for the Core Slim at the LBS. They decided not to stock it and were blowing out the few demos and samples they had. At that price it's an outstanding value.

But the Topeak RaceRocket HP is by far the better value.

BTW, here's the trick to using a mini-pump efficiently. I had to adapt my technique after I was hit by a car last year, breaking and dislocating my right shoulder. I'm right handed so that was a significant impediment.

Don't *push* with a mini-pump. Your triceps and shoulder muscles are relatively weaker.

Instead, pull using your biceps, pecs and lats. Keep the upper arm close to the side of the chest.

I braced my busted right arm against my side, with the butt of the mini-pump against my torso.

With the left arm I'd pull the pump stroke toward me. I let the wheel flop back and forth slightly with each stroke. With a lightweight road bike wheel that was no problem. It would be a little more awkward with a hybrid or mountain bike wheel/tire set. I hooked the forefinger of my left hand around a spoke to control the wheel. With a little practice it was smooth and less tiring than trying to *push* against the pump.

It's been about a year since my last flats, but if I'm recalling correctly it take about 200 strokes with the Blackburn Core Slim to get a 700x23 tire to 90-100 psi; about 250 strokes with the Topeak RaceRocket HP. But the Topeak was easier to use due to superior ergonomics. With both the first 100 or so strokes are easy. It gets much more difficult toward full pressure.




Easily adjustable for Presta or Schrader