I have been using PAR20 50W (550 lumen) halogen bulbs in my Viking hood for many years. They have been out of stock for a long time and my supply is running low so I tried these LEDs as a possible replacement. Even though they're only rated at 500 lumens, they're just as bright as halogens in my opinion, which is a pleasant surprise. The color temperature also appears to be fairly similar (to the eye). The only difference I noticed is that while halogen bulbs are dimmable across their dimming range, these LEDs go out when the dimmer knob is set to 50% or less. But they still have fairly linear dimming between 100% and 50% at the knob. They make no discernible noise. Overall I'm quite satisfied.