Hi Ken
You could also have chosen the 100 hz panel without the hummingnoise that was used in the newer Mk IV´s. The humming was as far as i know only present on the first versions. I have also gotten the 200 hz panel and agree with you. The new panel has a "glare" that makes it never quite black, but instead a bit shiny. Furthermore the white spots drive me crasy, so i have opted my dealer for a new 200 hz panel, and if this is not better, i will have my "old" 100 hz panel fitted again.
As far as the BV 7 goes, remember that an updated version is not always better, as crasy as that sounds!!!
/Ehlerz
BV7-40 MK IV, BL5´s, BL3´s, BL 3500, BL7-4, BS3000, BC 6-23, BV 1, BS3.