Them ain't fightin' words, kith. The tiers only have to do with status as collectable items.

Italian Bianchis in Celeste are beautiful bikes, and ride wonderfully. Though currently in high demand (for good reason) they are not particularly rare. Same applies for Grant Petersen era Japan-built Bridgestones (I have three of those, and though they are well-built, they don't come close to what Tom Kellogg builds there in Breinigsville.).

I'd consider my own PX-10 a non-collectable, due to its non-standard issue Japanese parts. What ruins its collectable status makes it much easier to deal with when riding.

Randy reported that his '63 version of the same bike is not regularly ridden, due to its lack of modern conveniences. His is much more authentic than mine from a collector's point of view, but with my setup I have no problems riding the thing fifty to a hundred miles at a pop.