[QUOTE/]Are Schrader mtb tubes easier to buy if I'm stuck in the middle of nowhere with a flat and no extra tubes?[/QUOTE]

Hmmm... I haven't run across a Walmart on the trails I ride...

If you want to buy a new pump, stick with the Schrader. Otherwise go with the presta and carry an xtra tube or two AND a patch kit.

BCIPAM: What's the difference between a "road" and "mountain" pump? I never heard there was a difference.