Is it worth it?

Hello I'm the owner of a pair of Revel F208's currently being driven by a pair of VTL - MB180 monoblocks. I have the opportunity to get a used pair of Pass Labs 260.8 monoblocks. Even at used cost it is rather $$$. So  I guess what I'm.asking are my speakers revealing enough to be able to hear the benefits of using the Pass Labs. On a side note I am not unhappy with my VTL tube amps just wanted to get honest opinions.
Thanks