Igbal:
the Dallas show is not where i would expect you to find many DR's
if you want to see a large selection from the best of the best, you should plan on attending either one or both of the following shows:
IWA in Nurenberg Ger.
or
SCI in Reno Nevada
these shows will not disapoint and you will be able to shop for what you want from both dealers and makers alike all in the same hall.
good luck !

DT