Disclaimer: I am not claiming to be an expert on this subject, but have been currently looking into tttf seeds and varieties for my own current project.
One: Price is very reasonable.
Two: The variety Hounddog8 turned in very good performances in the 2016 NTEP program (if I am reading the tables correctly. Very confusing, but in each category, it is not far down from whatever the top for that site is and almost always above 6 [acceptable] except in trials where even the best isn't very good)
Three: I am going to look into whether there is a Rural King near me here in St. Louis and see if I can get a bag of that seed.
Let us know how it works for you, if you try it. Note it is a monoculture , single variety, with the pros and cons of that.
Edit: They are near here and their website shows a four way tttf blend and a five way tttf with one fine fescue variety.
Aggressively priced south korean made tractors too.