We bought a Vango Idris Tall drive away awning (the older version of the Kela) a few years back from Charles Camping and use it on most trips.
These awninigs are great for extra space. Takes about 30 mins to erect and even quicker to take down.
We dont have one of the roll out awnings to connect it to so we just tie it on over the roof.
We had a problem with one of the tubes last year and had to replace it. Im glad we paid the extra for the Vango as spares were much easier to get hold of and not too expensive.
I would definitely recommend these if you want extra space.
Here is the description from the Vango website:
KELA V TALL
An excellent space to spend time with friends and family, the hugely popular Vango Kela drive away awning inflates in a few minutes leaving you with more time to enjoy your break. Designed to attach effortlessly to the side of your motorhome or campervan, the Kela has 4 attachment options and the tunnel space creates the ideal storage area or corridor, so you can keep your awning and vehicle clean and dry.
Vango Kela Tall Motorhome Drive away Awning