I'm probably in the minority, but I hate the sound of buckling springs. So tinny and twangy yuck.
It's also hard to isolate the sound of Topre from the board it's in, as on its own it's pretty quiet.
With that in mind, is have to say the best sounding "click switch" too me is clicky Alps. I won't narrow it down further as I haven't tried many.
My favorite noon clicky switch is silenced Topre