As far as high-end PV equipment goes, I haven't seen anyone local carrying a decent selection. It would be nice to walk in and get some hands on time. Like you said, mostly starter kits and mid-level stuff. Seems like every few blocks on every main drag around here we've got a place we can walk into and get supplies. Texas Vapor map for DFW area is a sight to behold.
My new fave juice bar is Lucky Vapor on Rufe Snow, pretty decent menu of 60/40 that is blended in house. EC Vape on Watauga Rd. has juices "imported" from different suppliers (Vape Dudes, Rock and Roll, etc.), some of it is pretty tasty. Worth looking into.
I like Mid-Cities, but their juices are just sort of meh. Crazy the amount of PV stock they can cram into that little display case though. There is yet another vape shop opening near Browning an 377, curious to see what they will have to offer.