Seems like I remember the chase lights on my long-gone Xenon being much slower than on Black Hole which I still own, I've stuck with regular lamps on BH. Looks cooler like three strings or 'snakes' of light moving around because of the latency of incandescents instead of just three LEDS moving around going on and off instantly. Xenon probably not a real difference other than of course the brighter LEDs.