There are some with much more on this board, my bet is that there are many Excels in the largest collection.
I have pictures of 7 Newsted Alembics on my site:
here I think Mica or Susan said he also had an Anniversary and a/some standard Series II basses and there might be multiple copies of the basses that are on my site (I think Mica said something like that)
I'm quite happy with my 5 (and a half) but would love to have many more :-)
Picture of the Rami collection is still pending, this is your chance! :-) (Please do not stack 'em all like I did)
Most expensive would most likely be the Series II doubleneck and/or the 25th Sterling Anniversary ($25K in 1999)
I'm not sure if the Sterling Anniversary is still available (Featured custom section says 17 are still available) but that would be a pricy puppy today :-)
If Mica comments: I always wondered if the Sterling Anniversary is/was available as five/six string?