I’m enjoying the treble – I find it easier to shape and the top notes are easier to hit and sound sweet. Top C on the descant is still a bit of a challenge even though I’ve been playing it a lot longer; I always feel as if I need to take a ‘run’ at it which is not conducive to sweet notes!
Last night I was reading ‘The Recorder Book’ by Kenneth Wollitz, which BTW is worth getting if you can track it down. I was amused to see he suggests learning to play those ‘unofficial’ notes above top C/F, so that the usual high notes will seem easier. Best done with earplugs or on a tenor, methinks.