Re: Guy Hawkins mpcs
I used to have a Guy Hawkins 8 (maybe 8*?) facing on tenor. Tons of projection. A very bold piece on the 10M (I sold it along with a bunch of other mpcs with the 10M).
A good piece for vintage horns as the chamber is wide open, so you'd have better luck with intonation than you might with smaller chambered pieces like the Selmer Paris metals, (though Selmer's USA metals are large chambered with a more pronounced baffle). Fairly high rollover baffle on the Hawkins, I recollect. Nothing too complex or unique about the sound except it could play as loudly as you wanted it to, but that can be attributed to 10M's anyhow.
I'm a Vandoren Jumbo Java fan when it comes to jazz. A more complex sound and a bit easier to control - more comfortable to play. They can shred, but they have warmth when you back off, too.