Weather you use the quick menu or not, I don't know but one major flaw has been solved there. On 3.34, when you exit the quick menu, a lot of the time it sends you to a random position on the track you are listening to, sends you to the start of a different random track but still says it it playing the same track you were on and several other very unusual things.
Now that never happens. I too think the sound has changed a bit but I feel I might be imagining it as it did read your posts first before hearing it
However, I think I prefer the sound. The bass does seem to be less noticeable but it sounds a little bit more detailed in the treble to me.
See I think I am just saying what others have said. Maybe I am only hearing this because of what I have read. I sometimes have wondered if firmwares actually make very obvious differences to the sound.
I think 3.3 to 3.34b was a very noticeable difference. Bigger than the latest 2.