OP specifically said...
"the best of the best" and is what I'm interested in, but I don't want to buy used. Now that those models are discontinued, what revolver now holds that high end spot?
Smith & Wesson
Performance Center
the model 27 being a strong candidate, but you pretty clearly are willing to put up the $$$$, so I think there are plenty of choices there for you to consider
or a Korth, of course (I guess they are still making them, too far out of my income bracket for me to Google)
Unless you very specifically want a single action... (Freedom Arms, as has been said), though SA not what most folks would choose
buy all three, and you will be far better qualified than anyone I personally know to define what "really" is Best-of-Best
PS
no matter what is said about the fine old Colts long out of production
(and there really is a mighty lot of "good" to say about them), they never were perfect, like any other make/model they had their weak spots as well
but all that aside, "that was yesterday, and yesterday is gone"
If it were not, then the original Dan Wesson's ought be somewhere on the short list also