Well, not quite what I hoped for!
A good basic indicator is that I did the Fodens concert on my Imperial!
Here's a side by side with my LMI, showing that they're basically identical ergonomically and size wise, besides the slightly different height of leadpipe:
Compare small.jpg
The York has no 4th valve slide water key. The finish and workmanship looks very good.
As for opinion, rather than the above facts, these are just my findings, and I'm willing to accept some might just be me!
I couldn't get it up to A440 pitch. In fact, 438 was as near as I could.
D's below the stave are unplayable on 1+2, 3rd is the only option, but this is common on all post 992 Sovereign clones.
It's too open blowing. As in, not enough back pressure. This meant (to me):-
it was physically exhausting to maintain a normal dynamic compared to the other basses to hand,
and I couldn't get a big enough sound without the sound distorting.
I couldn't get anything above F to slot properly, very hit and miss.
The sound is, I don't know, "watery"? ie say my LMI is Cream, this is skimmed milk? Well, maybe semi skimmed.
Whilst trying it out at the band room, a respected colleague just shook his head and said, "Nah, other sounds a lot bulkier". I can't disagree.
So, harder work to play, not very well in tune, a "weak" sound, not good in the higher register.
BUT the new Besson is only slightly better!
I'll sum up by saying I'm glad I've found a good Imperial, with the LMI for Band work to back it up!