I had that Classe and always loved it with my Thiel 1.6s and 2.4s. Haven't heard the Plinius, but I eventually ended up with a Pass INT-30A that I really loved too (and felt was in a different league than the Classe). Just another option to consider if you're thinking about possible integrateds to try. You can read some of my old threads where I was amp shopping if you're curious...
Good luck,
Chris