I am extremely biased since I run the Vandy blog Anchor of Gold, but I've been following Taylor since he was just a recruit out of New Mexico. He's got the bloodlines of a NBA father and the athleticism of a thoroughbred. Here's what I said about him about a month ago here:
Still, and I am biased as hell, but I'd love to get JT. He's perpetually worked to improve himself and commune his skills to an awesome athletic background. He's a high-level defender (3 straight years on the SEC All-Defense team) and he's developed a jumper to go along with a good ability to get to the basket. He shot 9% from 3 as a sophomore and 42% as a senior.
He's a bit of a headcase on the court though. He can get discouraged and fade away offensively during games if his shot isn't falling. However, his high level defense rarely falls off. Here's what he did against Michael Kidd-Gilchrist in 2012:
MKG in 3 games against Vandy:
17 points (total), 7-18 shooting, 15 rebounds, 13 fouls, 6 turnovers
JT in 3 games against UK:
50 points (total), 19-40 shooting, 29 rebounds, 9 fouls, 4 turnovers
Granted, the two weren't paired off on each other for the entirety of the time that they spent on the court, but JT acquitted himself very well against a player who is projected to be an All-Star SF. If the Celtics could get him late in the 1st round, he'd be VERY groomable behind Paul Pierce.
The knock on Taylor is his consistency. He tended to drift in and out of games offensively through his career, and when he hit cold patches he was prone to stop shooting for a spell. Still, that defensive effort never waned and he has the mindset and athletic profile to be a high level defender in the NBA.