I'm going on a trip to Europe soon. I'll be starting in Prague but will also go to France and Germany.

Are there any prepaid SIM cards I can get with cheap talk/data roaming plans for Europe? I've done a lot of searching on the internet but can't get clear information -- seems like everyone has a different experience.

I'm mainly looking for data but would be great to have cheap calling just in case, though I don't anticipate making a ton of calls.