I would tend to go with the recommendations of a hard-tailed mountain bike. Though you might want to go with street slicks.
1) You don't need suspension, keeps it simpler.
2) Good mountain bikes tend to have components selected with eye towards being abused.
3) 26" tires are available at almost any Walmart
4) Low profile, not as desireable by thieves.
Others of the LDS persuasion have outlined a good overall view.
I personally used a 20 year old Specialized Hard Rock as my exclusive transportation for 3 years and it held up wonderfully. A used bike can be good, just make sure you have it blessed by the local LBS that it's in good shape.
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"He who serves all, best serves himself" Jack London
Originally Posted by
Bjforrestal
I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.