Kahuna,
Merry Christmas!
Start with the ALTERNATIVE OFF ROAD hood mounts. You could put cinder blocks on them and not see any vibration.
Warm up for the HID's is a second or so...They do draw more current than the LED's on start up; but that lasts again only a few seconds.
HID's throw useable light further than LED's still; though the gap is closing.
In most of the comparisons I have seen, including those posted here, the larger the reflector, the better the distance of useable light.
LED's pulsate the light and appear much brighter; however the usefulness of that bright light diminishes with distance.
What do you want? Flood or driving toss up; distance, (spot), HID's still are the best.
Eddie