I've just moved to the SW from London, where I was on a hiatus (thus my lack of posting) - it's definitely going to take some getting used to (now I'm back in the game) but so far, just from checking on here and AW, it seems that the pickings are both far slimmer but also far more stable. In London it's like a merry-go-round of earthly delights, which is great when you're looking for something very particular (as almost all needs are catered for), or if you just want a pump-and-dump. But will they be there next week? Probably not! Or they might be on the other side of the city, which might as well be the other side of the country in some cases.
It seems, so far down here, that the girls are a bit more likely to stick around. So if you're in a wasteland, you're sort of boned (and not in a good way). But if you are able to find a regular who you like, or a few to rotate around, it seems like you can build up a bit more rapport. That's purely based on reviews and AW profiles, but I can see a marked difference.
It remains to be seen if this actually bears any significance to my experience. Looking to restart my career next week, and I'll write a review if so.