FWIW, based on some quick Googling, the
T7 is their top-pro line, not the T6.
Also FWIW,
* Why should anyone care why a really good musician plays any horn? We had a person posting here, once, trying to buy one of the worst soprano saxophones ever made because $famous_player played one. The reason why $famous_player could play that horn so well was more a testament to the player's skill because he could overcome the horn's problems. Buying the same horn as $famous_player is not going to make you sound like or play like $famous_player.
* Stephen Howard, a well-respected repairman (amongst other things)
gave the T6 a pretty good review. That's good enough for me to say the T6 is pretty decent. I see a lot of other reviews that also say they're decent horns.
*
Hanson has a try-before-you-buy policy. I don't know if they'd extend that to folks outside the UK, but it's worth calling them.
Also remember that
the base T6 is 1989 Pounds Sterling, new. That's $2962 US. That's
more expensive than a new R13. Similar price to the Yamaha SEV and CSVR, Patricola, etc., etc.
I like the idea that the Hanson clarinets are all computer designed and made. However, I'd really want to have some other clarinets around that price range to try, as well.