I would only ask about mass. Is the VPI exactly the same or nearly the same in terms of mass, compared to the TTW? If so, then we get to the voodoo realm of materials. Is the VPI ring made of some exotic material other than stainless steel?
If there is a big difference in mass, such that the TTW is much heavier, I would opt for the VPI ring, or an aftermarket ring that is more similar in mass to the VPI. If the two are the same weight, then it is up to your degree of audiophilia nervosa regarding materials.
If there is a big difference in mass, such that the TTW is much heavier, I would opt for the VPI ring, or an aftermarket ring that is more similar in mass to the VPI. If the two are the same weight, then it is up to your degree of audiophilia nervosa regarding materials.