top tier girls that I'm aware of, but as Regency demonstrates above, once you have seen a few hundred Kgirls, you will be able to tell one when you meet her. It's just a higher level of service with better skills and a smooth segue from one activity to the next at a very high skills level. Regency's list includes girls I consider top-tier, and I can add names like Lyn, Lohan, Suri, Megan, Aya, Hiroko, Bobo, Cari, Jane, White, Love Kim, Pink, and a few dozen others I've seen over the years.
Two- hour sessions and tipping being uncommon is a compelling argument for top-tier girls to stay in SoCal. The top tier girls expect extended sessions, frequent tips AND that you will see them again, so they work where they can get that. Second tier girls may be happy to just get the repeat business, as you suggest.
Since the Kgirl recruiting focus turned to willingness to do BBFS a few years ago, that's why you're getting girls who are not as attractive, have limited skills, and don't exert themselves too much, so if that's what the BA mongers want, that is what they are getting. They should not be complaining. The DDG top-tier girls do not have to offer BBFS to make a great living. The way you should view this is if the girl is advertised as PSE, you will be getting a lower level of service and one who may not be too pretty. The disappointment comes into play when you expect to find a top-tier, DDG girl offering BBFS. Accept that they are mutually exclusive in MOST instances and you will have a better time with the PSE girls, if that's your priority.