Levinson 36 DAC vrs. 360S DAC Which is better?

Thinking of upgrading? Would you bother?
I ran a 36 for a couple of months and then swapped it out for a 360s, in what most people would consider a highly revealing system.

The 360s is of course better, but the difference in my system was subtle (and the subtle was not the kind of "subtle" that is, to experienced two-channel people, a "very important last 2%").