I've kept the low profile mounts for the reasons you've outlined above. Only problem I had with the anti-theft nuts is that the key falls out of my socket set too easily and I run out of hands juggling everything. I don't know whether the ani-theft nuts will prevent the bolt from been unscrewed on the vertical adjustment access as the head of the bolt is accessible and could therefore be loosened. Finally managed to give the lights a work out on the way back from Victoria Point last night. Took a few detours down some dark side streets out in the bush around Burbank. Both lights are configured with spots and aimed horizontally straight infront. The spots certainly do light up the road, with the high beams doing a good job of illuminating the edges (although I have upgraded the bulbs). For this reason I would not put a spread filter on the spots as the kluger's lights do an adequate job and much rather have the spots doing the distance work. One issue I did find was that when driving into a dip, the bottom of the beam hits the pavement about 100m infront of the car, creating a bright spot in my field of view. This was often quite distracting, and was a problem on undulating sections of the road. I am tempted to aim the spots slightly higher as no road flat around Brisbane, but will probably leave it aimed as is. Any reflective object glows and sometimes the signs were a tad bright. Compared to the Hella Comet 500s I had the LF 170 HIDs definitely have twice the distance. The Hellas at first seemed brighter to me as they lit up more of the road closer to car (I was running a spread and spot). This is a little deceiving as the LFs with such a long penetrating beam don't do this and light up way into the distance instead. I'm sure if I fitted a spread filter to the LFs they would appear much brighter than the Hellas, but I find the LF spots combined with the upgraded Kluger high beam covers things well. I had to dip the spots a couple of times due to ongoing traffic, and they fired back up straigt away with little loss of brightness. Becuase the spots are so bright I didn't actually notice the glow from the headlights of the oncoming traffic until the cars popped over the crest or around the corner. There were probably a couple of annoyed and blinded drivers arond Burbank last night. I really need ot give the lights a propper work out on a long range night run, as I was in test mode rather than normal driving mode.