Hi mpking,
[quote]There are some retailers in Waco that carry some latex hybrids or some mostly latex mattresses (using blended Talalay)
What are these retailers?[/quote]
Post #3 here should help 
There are certainly some options near you and I would first talk to the retailers or manufacturers on the list and explain what you are looking for (latex or latex hybrids) and your budget so you can narrow down the ones you want to visit and save some time.
Phoenix