We recently did a comparison to compare the features and brightness of the Feniex Industries Apollo 2X and Whelen Engineering Avenger. The first half of the video is "daylight" aka the shop lights were on, and the second half the lights were off to simulate night. The Feniex Apollo's have Wide-Lux technology; so to be fair we tried to capture multiple angles and distances. We won't say our opinion, instead we'll leave it open to draw your own conclusions.
After you're done watching that be sure to see the second video, when we turned on the UBL Interior Visor Light on!