As I just posted on another thread today, I have the Shefnacker TTT replacement mirrors and just love them. They are a bit pricey, but they are heated, have a big convex spotter mirror, have flat main mirrors for better clearance judgement, and mine have the optional LED clearance and turn signal lights.
The TTT mirrors pull out manually, but adjust and heat with the standard switches. They span 108 1/2" when open which gives a good view, even with a wide body trailer.
There is a review on the Diesel pages
. Best $$$ I have spent on the truck. They beat the OEM camper mirrors hands down.
By the way, the wind whistle mentioned in the review has been solved by a minor change to the mirror front plate.