That's not intended to be a snipe at GEX, Steve - UTX does a great deal to help with the placement of towns - for example I can see the village I used to live in (it's actually a small town, but still a village for political reasons) called Wombourne in Staffordshire, using UTX. Wombourne is blended together with Wolverhampton, Dudley, Stourbridge and the rest of the West Midlands using default or most replacement landclass products.
It just doesn't look at all like Wombourne - everything is far too separated and there is far too much greenery between houses.
I've noticed the same when trying to do sceneries in Alaska and Newfoundland - the only landclass that gives the density of buildings within a small area is "suburban large city", but then you get tower blocks and big apartment buildings, when very few buildings in the place you are trying to represent are higher than two stories.
I feel I have to reiterate that this is not bashing any FS add-on product - they have to be a compromise covering all the different areas that the texture might appear in, but to date no-one has got it right in any shot I've seen, there's always too much grass and not enough roofing.
I've attached an aerial photo of a moderately typical rural English village that I tracked down in SBuilderX (it's actually Swindon, near Halfpenny Green airfield in South Staffordshire, if anyone is nosy enough to want to know). The only landclass texture that I can find that looks even close to this is LC_Large_City_Suburban_Grid_Wet - but that has the aforementioned tower blocks and large apartment blocks placed regularly around it... The highest building in Swindon is the pub at three stories. Not quite the same, if you see what I mean?