The ones I have are not great by any measure, but I have not found something better for my 4Runner, therefore they have won by default.
I'm generally very picky about things like mirrors & driver set-up. I want my mirrors clear, clean, as vibration free as possible. Most stock mirrors meet this criteria, many aftermarket do not. These things vibrate and move lots, as you might be able to deduce from the design/mounting arms. They are also not quite long enough to see around the side of a large trailer, particularly on the passenger side. With your slightly wider 100-series they should be slightly better than on my 4Runner. I'm only recommending these because you can likely make them work if there is no specific mirror extension made for your platform.