I have all LED lights outside now. Three strands of multi-color mini lights are strung from an evergreen on one side of my porch, all the way around the front door, and then around an evergreen on the other side. I have a candy cane sculpture on the lawn with two deer. The deer are covered in gold tinsel so the twinkling lights reflect off that and look "warmer" than LEDs usually do.
I love them. They're very colorful and bright. Next year, I'm going to get a couple more sculptures for the other side of the lawn, and they're going to be all LED. I think they keep improving the technology of them. The newer the LEDs, the better they look IMO.