We have the GL280 Air, it takes minutes to put up and unlike awnings that have poles, there is no risk of damage to your van during high winds, also no creaking or knocking keeping you up at night.
The only issue we had personally, was that one of the support bars kept deflating over night, of which we informed the dealer of from which we purchased it from (7 months ago) and they have managed to source a replacement from the manufacturer, free of charge.
We are that pleased with ours that we are now looking at getting the GL390 air.
HTH
Chris
------------- February - Blakemere Touring Cheshire
April - Lakeland Haven
May - Sandimouth. Bude
August - Ninham Holidays. I.O.W
August - Windy Harbour. Blackpool
October - Callow tops. Ashbourne
have to say I bought the 280 at the weekend, saw it up and had a go at pumping it up which was easy, the salesman also threw in a carpet for my £299 so all in all a good experience, can't ait for easter now to use it