As the person who bought Peter's Beosystem 8000, after going through a similar process of decision making, I can only say that I'm very glad I did. But then, I'm still suffering from the Beovirus as well!
There is a view that those with an 8000 system eventually don't use it if they have other high end B&O equipment as well, but so far that hasn't been my experience - I use mine as my main listening source about 60% of the time - it alternates in my main lsitening room with a Beomaster 4400-based system and lives under the bed when not in use!
There have been a couple of problems with the Beomaster 8000, which apparently has a reputation for drifting 'off-spec' very easily, but I am lucky in having relatively easy access to someone who can fix these things.
The only real problems are about size and domestic acceptability. It is huge, particularly if set up side-by-side which is I think the best way to have it (about 170cms in total and that's without a CD player such as the CDX.) and it weighs a lot - 22kgs for the Beomaster is a huge lump to move about on a regular basis. And the connections can be fiddly. Oh, and my partner hates it!
But you'll probably regret it if you don't buy it, particularly at that price.
Cleve