I reviewed adapters on-line for my 9 country European vacation for several hours and was confused about all of the conflicting advice and didn't want to spend $50+ for an adapter or converter. Therefore, I stopped by Best Buy and was quickly shown this product. The knowlegable BBY salesperson recommended this adapter and it was perfect. There are multiple adapters which fit together in a compact manner so great for travel. This device is round which is very important as this is the configuation of most outlets in Europe - plus they are recessed into the wall. A co-worker lent me her Brookstone multi-country adapter and it really only worked well in England since it was rectangular. In all other countries we visited, the prongs on the Brookstone model were not able to fit into the outlet properly. Others on the trip wanted to borrow my adapter so I wish I had purchased an additional one. This adapter proved a good value and worked great to keep all of our electronics charged.
Note - most US electronics are dual voltage (110V US to 220V European) so all you need is this adapter to charge your cell phones, cameras, travel curling irons, tablets, etc. You should not need a converter in addition to this adapter. However, check that your device shows both voltages - usually imprinted on the back of the device. Hair dryers may be different but we didn't bring one. Contrary to most of the articles we read before our trip all of our 15 European hotels (mostly 3 star) had hair dryers in the room so leave yours at home so you have room in your suitcase for souveniers.