We have built a lot of halogen spots in the house with us and have us with rising electricity prices, they spared to make, as you need it almost a power plant. I've been looking for and have then found the Philips products and rely on the good reviews. That was a good decision. The LED's are absolutely great, give a warm white light and light at 36 ° very good. In the pack is available as a replacement for 20W halogen. I think that they replace 35W halos. I did not even have block new transformers, pure simple halos out and LEDs. We still need more LEDs and have now decided that we need to order from Philips smaller. They are intended to replace 15W and 2.5W have power consumption. In addition I will also report. My wife was always gegenerin of LEDs, with the Philips but I was able to convince them. So just buy it!