Anyone has experience with http://www.cellularabroad.com/ ? It's listed on the article/resource here for telephone sim card in London. I plan on getting their data for multi country, but don't know if ithat's a good way to do it? Basically, I just need a basic data plan to use there, and once I get to each country in Europe, I'll plan on purchase local sim card and their plans for voice talk only. I just don't know if it's intuitive or not.