I am using Focal 1007 Be monitors with a Cary SLI-80F1 in Triode mode. They replaced Thiel 3.6's / Conrad Johnson combination and I am very pleased with the results. The Focals are very open and detailed with plenty of bass. Sonus faber makes a great monitor as does Triangle each have a completely different sonic signiture. So it depends on what you are looking for.
But with any speaker it depends on what you are using for electronics and source components. As well as your budget and what you like.
But with any speaker it depends on what you are using for electronics and source components. As well as your budget and what you like.