Well, I got my HD86 (UK version of the HD8600) yesterday and up on the ceiling.
First impressions are fantastic, out of the box the settings were very good. There are a heck of a lot of options though so I think there will be many happy months of tweaking.
There seem to be many questions about the DB, well I watched over 8 hours of blu-ray, HD-DVD and HDTV lastnight and even when setting DB to Cinema 2 myself nor my mate who helped with the install (it is a beast by the way) could see any flickering, or light modulations, full stop! The manual iris works well, I am not sure how much the DB actually buys you anyway...
If anyone is interested I have some photos of the install?