I maintained three bikes (including my own) for a Trans America last Summer. With all that pumping I really liked the Topeak Morph series because of the ability to use it like a floor pump. I used the Mountain Morph because it is a bit shorter and mounted better on my bike than the Road Morph.

That said if you want one to use with your pump peg, I used the Zefal HP for years and it is pretty nice. On a long tour my preference is to use one of the Topeak Morph series though.