They are very popular in Bridgend and Pencoed area where my kids live. In fact, my ex has put her house up for sale with them and there are now three of their signs next to each other in the same street, as well as at least half a dozen more within talking distance.
I have to agree with Sportline. I grew up in Llanedeyrn and my family have lived there since it was built. Roundwood must be the worst estate there and I concur with most of his reasons. Brynfedw is more an average area, where as Glenwood is probably above average. You can't paint all households with the same brush, but I would be more than happy to live in Glenwood, but would not live in Roundwood at all.