For years, I used the One-2-Call plan and was able to keep the same prepaid number. I misplaced it and now need to get replacement to give to the Mrs. She also recently upgraded to iPhone 5 so can access 3G speed.

What would you suggest between the above. She'll be visiting with friends for about 7-10 days and needs just voice, data for checking emails and skype. Ideally we'd like the keep the number and be able to top off for future visits; but not a requirement.