Nope, don't go Chinese or other knock offs.......go with Rick, and you'll be spending more money with him too.
+1. Rick offers some excellent equipment, or "creature comforts" custom made for these bikes. I am using his extenders (among at least a half dozen other items) and they are perfect. Only the innermost corner of the mirror image includes my elbows.
I have always preferred to set my car side mirrors wide and low. For example, I don't see much sky and do not see my own vehicle (I know where that is and can use the rear view mirror to see directly behind me). I set them wide enough that I can see the rear of the car next to me in the mirror AND the front of the car with my eye when glancing at the mirror. Effectively removing the blind spots for my car completely (actually they still exist, but they are in the second lane over, instead of next to me).
I can't do that with the motorcycle mirrors as much because I do need to see directly behind me with at least one of the side mirrors. This opens up some blind spot issues. I have trained myself well to always
check over my shoulder, but would still like to get better coverage of the blind spot in the lane next to me. So far the best way I've found to eliminate the blind spot was to add stick on mirrors to the bottom inside corners of the stock mirrors. This covers up the image of my elbows with a wide angle view of the road immediately next to me. Takes some getting used to so you don't freak out when you see a car in the mirror. Also, finding a small enough mirror to not waste too much real estate on the stock mirrors was tricky. The adjustable ones are nice, but suffer from the vibrations inherent on most bikes. I found some that mount on pedestals, which allows me to cheat a bit and mount them further inboard. Gotta be careful that they don't take too much wind. Once a final position is determined, I can either glue the ball joint, or try to print a fixed base. One of the mirrors holds pretty well, the other vibrates loose all the time. Still experimenting.
I eventually swapped out the stock mirrors for the Aprilla Tuono mirrors that are discussed at length on this forum. They are not as tall, but are a bit wider than stock mirrors. In my opinion they do look much better and fit the styling of the bike better than the stock. They also seem to bring a noticeable improvement in buffeting. However, they have a much smaller field of view AND the bottom outside corner that would provide me with that look into the blind spot is designed off of them. The blind spot situation is significantly worsened with these mirrors. I have yet to look into printing a bracket or something to clip on an extra piece of mirror in that corner, but if I can't figure something out I'll probably dump the Tuono mirrors. It bothers me to see a vehicle approaching in the side mirror and then completely disappear for what seems like forever until it reappears in my peripheral vision. With vehicles being as quiet as they are these days and drivers not paying active attention and just subconsciously pacing in exactly the blind spot, I would reluctantly prefer the ugly and turbulent stockers to the sleek and smooth Tuonos.
(Which reminds me, I should probably pop over to that other thread and post an update about the Tuono Mirrors.)