Best gas for my '04 Acura TL?

I just bought an '04 TL and since I love my car and like the better performance with the higher octane I am going to use the required (really recommened) 91 Octane minimum. Is there any gas station that even carry 91 octane? I'm here in the Dallas area but all gas stations I have been to only carry 87, 89, and 93. Wtf?