A & E and Carefree seem to be the most often used. I've had a manual A & E on our previous motor home and now have the A & E weatherpro (electric) on our current model. Both work well, although the one we have now is a dream for us to use. There are other more expensive brands on the market, all depends on what you want.
I recommend that you spend the few extra bucks to have the metal weatherguard on the awning. I've had awning both with and without the metal weatherguard, and the metal makes a world of difference in keeping the awning nice.
Tom and Barb
'07 Winnebago Voyage 35L
Workhorse W22 chassis FMCA 219315