My wife loves this charger more than I do, her HTC Desire is getting on a bit and the battery is getting weak. She constantly has this charger plugged into her phone and it tops her battery up nicely.
My Samsung Galaxy S 2 charges well off this, with the screen on dazzle, the bossy woman sat nav voice barking at me to turn left and the phone charges away merrily.
On an weekend away to Manchester from down South, this charger got used brutally. Between my wife's phones useless battery and her need to film and photograph every second of a concert with my mobile, the return trip saw us with 2 topped up phones on the return trip.
The build quality is good, it is well made and the plastic is not cheap feeling. No worries with plugging it in to the car lighter socket, no fiddling like with other in car chargers I have used to get it to work.
5 stars, I like this charger.