Impressive Navitimer collection Alex. Not my cup of tea at all, but impressive nonetheless.
The forum Jeff links has some interesting posts on there. And lots and lots of "is this real?" posts - seems Breitling collectors are really plagued by the fakes. We see a fair few dodgy Heuers too, but I think we have it relatively easy compared to some of the brands out there.
It also makes it clear to me that my favourite Breitlings are the simplest Top Time models. Pretty much everything else I just find too fussy for my tastes.