Hi Roger
We had (still have) a Bradcot Classic that we used with our Bailey Beachcomber 470/4. When we changed caravans a few years ago we had to get a slightly larger one, so due to the pricing at the time went for a Dorema Cardinal.
Both my wife and I agree that the Bradcot is the better option. The zips are better, it's better construction and fits better on the frame. With the Dorema the caravan skirt is poorly sewn together and so can't be tensioned properly, the front 'porch' flap bit can't be tensioned and so flaps around in the wind, two of the zips have broken/jammed. and the rain naturally runs off the awning right above the 'doors' on the front. The Bradcot, which we used for 6 years, had no real problems and if I had the money I'd get rid of the Dorema which we've had for 4 years, and buy another Classic.
We had an NR porch awning for a few years which was fine, apart from the stitching tearing in a few places, and our in-laws have a Salou awning, which I believe is owned by Bradcot, and they've had no problems with it.