Looking for recommendation between those three brands? SoundOff, Whelen or Federal? I had experience with Federal and Whelen, but not with SoundOff. I am looking for dual color lights blue/white with white steady burn option as override function. I know that FedSig MicroPulse Ultra are made in Taiwan but I use them and can't say anything bad about their brightness and quality. But now I am looking for more lightheads (mirrors, under the mirrors, grill and side bumper.