I am traveling from US to Europe this July- 3 days each in Munich, Prague, Krakow, and Berlin. I have an unlocked phone that I plan to buy local SIM cards for and use in each country (dining reservations, calling guides, etc). I also am planning on getting a second unlocked phone with a SIM card with a US number so family (several members may need me in an emergency or semi-emergency) can easily reach me (no way can they figure out international calling, trust me)- minimal usage, just piece of mind. Am I best off getting a cheap unlocked phone from Ebay and a low minute SIM card from Telestial, the $19 dollar Telestial cheap phone with 5 min SIM card that can be topped off (how small increments?) or none of the above? As far as the local SIM cards, what kind of charges do you incur for calls to US?