My personal view on this is that even much less expensive razors do a very good job.
I own four ATT plates and if you asked me "do you think the high end ATT razors offer a shave that no other less expensive razor can deliver?" I'd say probably not. I only own two more razors ( I'm not a collector ) but that is enough for me to say "probably not" because I can also get an equally excellent shave with either of the other two. The difference I find and why I'm still happy I paid the money these things cost, is in the built quality of the razors. They feel lovely in the hand, the weight distribution, the look, etc. So from that point of view, yes they are fantastic.
As for shave quality.... there are so many factors that it's very difficult to attribute a razor the title of a champion. Too subjective topic for me to say this is the best razor. Some days I shave with what I think it's the best razor ever and the following day it's not the same expeience at all.
I also have to say that I'm perhaps different to most of the guys here. I don't want to collect razors that I will hardly use. I also want to use the ones I like and use them a lot.
Would I like to own a timeless razor? They look great, I'm sure the quality is fantastic too but unless a win the lottery I would not bother