I am a licensed electrician in Putnam and Westchester counties in NY. I work with a lot of high end clients from NYC who lets just say want the best of the best and don't care about cost. I use these as opposed to the super expensive dimmable transformers from the supply house and nobody knows the difference. They also feel, and look exactly the same as the high end ones so there literally is zero difference aside from the fact that Hitlights is far cheaper for all of their products. I have been installing Hitlights for all of my clients for the last 5 years, and ive had very few call backs which were related to the products.