I'm keeping my number, leaving Verizon and going with the $40/mo unlimited, no contract plan from MySimpleMobile (
http://www.mysimplemobile.com/) and getting for $40 what would cost me upwards of $75/mo w/ another provider. And, I can always pop out the SIM when I'm in Spain and use the phone with one of the providers there.
EDIT: Actually--correct that. Verizon wants $80/mo for unlimited talk and text, but the web is capped at 2GB, so that's kind of dumb.