I bought these to replace 50 watt flood halogen bulbs. Here are the pros: 1) the color is almost indistinguishable from the halogen (I got the 3000k) at full brightness. 2) these have excellent dimming capability, however that seems to be dependent on the fixture and or switch you use. In one location I used some IC HALO cans from homedepot and lutron diva dimmer and in another I used generic IC cans and a lutron maestro dimmer. The HALO cans had trouble dimming to low levels like the generic cans. The maestro dimmer was able to get the led bulbs dimmer than the halogen bulbs. 3) I could not tell the difference in color rendering between the halogen and these bulbs and I take that as a good thing. 4) brightness is about on par as a brand new halogen bulb, maybe slightly dimmer. However, halogen bulbs degrade over time and compared to my two year old halogen bulbs these were much brighter. Cons 1) unfortunately despite being "wide angle" flood bulbs, their angle of t...