Those are certainly five cities awash with enough escort/spa talent to keep you very busy, and drained, but aerobically quite fit, if you like those horizontal aerobics. And who doesn't. We guys are all total sluts at heart! LOL. It's the Curse of Darwin.
I have spent bits and pieces of a few months entertaining myself and friends by compiling an ongoing city-by-city directory of the best reviewed escort/spa vixens in the largest 50-or-so metropolitan areas of North America. The materials come from probably two dozen online sources and exhausting field research, deep in the trenches, burrowing around so to speak. (It's nice to be semi-retired, but still walking around.).
The object has been to list 20+ of the best such women for each area, based on attitude, looks, bod, performance, with reference to dfk, bustiness, c-bbj, 69, fs, gfe, unrushed, NS = nonsmokers, NF = non-phone-answerers, fybo, sys = s**k-you-silly, romantic atmosphere, and other subjective factors here and there. This is entertainment, not hard science, just hard.
I'm not saying one city is "better" than the other, but Miami and L.A. certainly have big numbers that satisfy most needs fully. You omitted Atlanta, Houston, Dallas, Toronto, Boston, and Phoenix, maybe Chicago, all of which have a great deal of talent, visiting and resident, if you take the time to find it. It adds up.
Sadly, my home town half the year - DC - is on the talent-starved end of the spectrum, at the Kansas City level, but with numbers of very average providers. Even the hottest visiting vixens do not flock here, probably for several reasons, which I would like to hear from providers.
Several cities have a few absolutely awesome courtesan-vixens, even Denver, Kansas City, Philly, and Tampa. The shortages in New Orleans surprise me, but I keep finding one or two more with every search.
What matters most to me is to have a decent selection when I travel to these places. More and more cities have quite delicious selections. The one best place to search for this remains TER by far, although Montana guys still say they go for the babes on realsheep.com. LOL