I was once interested in these wheels and tried to get something out of these guys, but never got a response. My current take on them is when the rim is worn you have some very expensive junk on your hands. Unless they can refurbish them, but I don't know if they do.

I bought my and Connie's APBs (which were new old stock) for about $1600 each. I think these APBs, which are the later ones, are much nicer than the earlier ones (such as my green one). Reynolds tubing, much better quality brazing and welding, some frame refinements... The separability is only worth a small extra amount if you buy one new. This particular example has, besides front and rear rack (worth several $100), Ti bars, upgraded brakes and gearing and drivetrain, Brooks saddle... the list is rather long; effectively it is an APB frame only plus all the standard entry bits replaced with high end stuff. Most certainly worth the $1900 and then some. The TSR does not have Reynolds tubing and the stainless steel suspension links. The only (debatable) advantage of the TSR is that the rear suspension joint includes the bottom bracket. I haven't ridden a TSR so can't say from experience it would be a significant difference.

[correction: brakes appear to be standard]