Drive away air awning recommendations

Hi all, 
I am considering purchasing an air drive away awning to connect to the Thule Omnistor. 
Can anyone recommend a reasonably priced awning that would fit a Warwick Duo. 
Thanks

We have a Vango Galli Air III for our Symbol. Lovely well made product and great once its up! Feels like you could almost get the van inside it.  BUT, its a beast to transport, lug about and store.  I do get it in the Symbol, stores well under the wardrobe while travelling but causes problems for using the nearside single bed for overnight stops when you don't need an awning.  Not sure it fits in the reasonably priced category, but you get what you pay for I suppose.
I would suggest looking at where and how it will be transported and weight which is just as important as in use capabilities.
Good luck.