Generally, I would go with a Brunello.
There are plenty of outstanding producers.
You could also do a very top flight Rosso di Montalcino. There, I would recommend Poggio di Sotto.
Specifically, if we are keeping prices under $80/bottle, I would skip the Brunello and seek out a recent vintage of San Giusto a Rentenanno "Percarlo" -- a favorite of my for a decade before Galloni started singing its praises