I can definately recommend the SkyKing mirrors since I replaced the Zefals due to the constant tightening they needed to stay on. The SkyKings definately stay put and they look really nice on the bike without looking like big ears sticking off the side like conventional bar end mirrors. My father snagged one off of my bike to put on his Hawk GT and loves being able to actually see behind him without the buzz, and this is on a V-Twin machine. Now I need to order another one to since being snagged by relative domain. GEEZ!!!!!!!!!