I nerded out on tint just last year, and got quotes from all I could find in town. Most here recommended Ag Solar.
In my case, a Tesla with a lot of glass, Ag Solar's quote was $2,000 with a brand of tint that is good, but not great (Llumar IRX). I ended up driving to Houston to get what most considered the best brand of tint at the time Xpel Prime Plus for $925. The only place I found that did Xpel in town was
https://www.glopremierautospa.com/, but they wanted $1,396 and wanted to do 2 pieces for the big back glass instead of one full piece like I ended up getting. They did not have the necessary equipment to do a one piece.
I used
https://www.gcautoshield.com/ which is a highly regarded place on many car forums. The TexAgs Auto board's reccomendation used a brand of tint I did not want.