Well, my 9617 (32") doesn't buzz at all. Me thinks you should make more of a fuss if it bothers you! The closest person we have to a Philips engineer is Zacabeb... he may even be a Philips engineer! He may have some practical suggestions.
The "peculiar" geometry can largely be cured (mine's good now, aside from a slight downward bend at the bottom LHS) and the bending caused by poor power regulation (common to all mainstream CRTs) can be minimised if the contrast and brightness are set-up carefully.
If you need any help, I'll be glad to give you any info you require.