I think you need to pick a city on a number of factors (not necessarily in order of importance):
- Cost of traveling
- Competition
- How well you might be known in the tour location
I picked Austin. I think the cost of going there would be minimal. The competition in other venues you listed is very high. Most of those cities are flush with providers. Austin has quite a few, also, but I don't think nearly the competition as the others you listed. I also think there is a greater chance that you might be known there. Men might have traveled from Austin to Dallas on business, and checked out the talent in Dallas. Or, there might be some Dallas fellows traveling to Austin that know about you, but don't have the time/money to see you in Dallas.
Just my .02. Travel safely.