I've tried commercial phone-sex in the UK but find it rather disappointing. You know that the girls are only interested in making money and they try to keep you on the phone as long as possible. I've tried the "cum in 30 seconds" type ones as well but it's still the same. Many tend to have long introductions as well, describing the services, but again this is mainly to make more money. When I'm horny I often think of phone sex, and as someone said the ads and pics are really good, but personally I think unless it's on a "non-commercial" basis I think wanking to girlie mags or the stuff on MP is much better. Cheaper too! You can spend a lot of money on such calls but I think a good wank on my own is far better!
Happy wanking, whether by phone or not
Mr Blobby