so for those of you who followed my other thread, i am leaving for a study abroad trip this weekend, which will last for 2 months around the Mediterranean and north Africa. i just picked up a Blackberry 8220 and am getting it unlocked tomorrow. Id like to pick up a prepaid sim to use while abroad to keep in touch with my family. ive been surfing a few online but its confusing. ive seen these 2 so far:
http://www.amazon.com/National-Geogr.../dp/B0021L9JDU

http://www.telestial.com/view_product.php?ID=MSIM-EX01

does anyone know if these are any good? can anyone recommend any others?