I had my Primare back briefly (before it failed again!) and there was no “Wow!” moment after three weeks with the Rotel. A bit of an eye (ear?) opener.
I think amplifiers are one of the least critical parts of the chain. Well, they are important but not necessarily for the reasons people think.
Amplifiers can muck up the sound. An amp you don't like the sound of can't be fixed but if you have one that gives the kind of sound you want, and it can drive your chosen speakers properly, you'll almost certainly get bigger gains by upgrading something else.
Not saying a better amp can't sound..better but the differences are often small for the amount of money they cost.