several stores have told us the same thing. my daughters is broken right now. every store has told us if we activate another phone, she will loose her credits towards a new phone for two years, and were past our two year contract now, so were eligible for new phones, we just waiting for some new models due to be released in sept/oct.
I used sprint almost since they had service here, guessing 15 yrs, and my wife follows closely new deals and offers they make. personally, we love the sprint/nextel combination, but as you know their phasing it out. (works great if one has poor reception, we just switch over to reconnect)
and i got you beat on the 10+ phone thing, i even had bag phones when they came out.lol dating myself here.
one of the first smaller phones they came out with(it was not small at all) i paid something like a grand for it. oh my the money i have spent on phones.