BlenMounts are very clean, I had one on my V1 Gen 2 in my Audi S5 before moving to the Model 3. It has a mirror power tap available as well, but unfortunately there is no switched power in the mirror like a lot of other cars. Some people just remember to turn the radar off or remove it when not driving to avoid the battery drain. Others hardwire it down in the footwell to switched power. Works well.