I've been playing one for the past 6 years, very free blowing and responsive. I tried a Selmer Ref 36 today as I had been reading good reviews and was considering one but was left very disappointed although it has saved me £5,950!! It might be me but the Selmer needed more work, didn't sit as comfortable in my hands and wasn't as loud.
As I say it's purely a personal observation and I'm sure other players get on fine with them, it just wasn't for me. So back to my trusty and faithful PMT-66
NB: try before you buy is a must for any instrument, then form your own opinion.
Good luck