They say that its usually the most faithfull one that goes unnoticed and taken for granted. Well this describes this transformer very well. Shuffling between the US and India I have some items that work with the US voltage and some for the Indian voltage (US: 110-120V 50/60Hz AC, India:220-240V 50/60Hz AC). During my last visit I purchased this Step down transformer to convert from 240 to 120 V AC. The best complement that one can accord a voltage transformer is, that it goes unnoticed in 3 months of continous operation. Other transformers usually produce too much heat (which limits their continous use) or breakdown, some even humm a little. This being a dual wattage transformer, another advantage this has over the others, I was considering to buy then is, that it automatically switches to the desired wattage. Which definitely has its advantage - one can't accidently switch it to the wrong level. Also this has a tripover fuse that can be reset by the push of a button instead of requiring a fuse replacement. A bit heavy and expensive.But, I think this is as good as it gets (in this area).
Franzus - $59.99
REI - $49.95
Amazon (Only the converter) - $43.95