Like many other Monster owners, I was not happy with the stock mirrors on my bike. They vibrated and moved out of position all the time and I was not able to see very much.
I decided to try out
Monstrack mirrors. Kevin, the owner, was exceedingly helpful and allowed me to try them on my bike before making my final decision.
They come in short, long, and extra-length versions. Since I am small, I chose the short version, but I believe they may not extend far out enough for others, and most riders would probably prefer the long or extra-long versions.
The mirrors require a hex wrench to adjust them, they cannot be adjusted on the fly. It took a bit of fiddling to get them where I liked them, but after I did so, the locking screws kept them in place. Over time, a couple of the screws did loosen up, but applying a bit of loctite has kept them secure.
The visibility is great, I have no problem seeing a full lane to either side of me in them. Vibration is minimal, especially compared to the stock mirrors, but I do get a little bit when on rough roads at high speeds.
I've been happy with the way these mirrors look and work.