We have both the Comfortz awning panels and a poor-quality drive-away awning (Easycamp Silverstone). We haven't used the drive-away awning that much, but it's useful to have if it's wet or wintery. We don't need much space, just a protected weatherproof outdoor area so you're not so limited in bad weather. The problem with the Comfortz awning sides is that they are heavy and once they're up you can't move the van without taking them down again. The problem with the drive-away is that it's fiddly to put up, and a bit saggy (resulting in ponding on the roof, resulting in a broken pole). However, I am now coming to the conclusion that we should buy a really good quality drive-away awning and get used to putting it up. I'm well aware of the difference in quality between a cheap tent and a good-quality tent, but I'm not sure which are the best (or better) quality awnings, and there won't be any more shows this year to look at them.
If anyone's got recommendations for a good-quality, taut, neat, well-designed, small drive-away awning (air or pole), I'd be glad to hear them!