Cabasse is extremely underrated and probably would not be amongst the first speakers most would recommend. The brand is partly at fault though, because outside of Europe they are pushing mainly their Artis and Pearl range.
The first time I've heard the Cabasse Riga I wanted them so badly that I immediately sold my Triangle Comete 40th and bought them the next day. The Rigas and the Baltics are that good. Yes, piano music sounds phenomenal with the Cabasse (I am a classical pianist). The Murano is one rung lower but from Steve's videos seem to retain most of the qualities. You would not go wrong with them.