8 ohm speaker that sounds like sonus faber

Do you already have a 70 watt tube amp that you want to continue to use? If so, what is it? If not, if you like the Cremona M, why not look for an appropriate tube amp for them? It is my understanding that the new Cremona are a lot easier to drive than the old ones. I have the original Cremona, but drive them with a tube pre and a SS amp. Have you considered this type of mix?

We need more information. What price range? What type of music? I am using a Pathos Classic One (integrated 70 watts with tube pre) on SF Conterto and the sound is really intoxicating. If you want to drive Stradivari, that is a different story. But 70 watts of tube can drive lots of SF apeakers. If you want SF, 70 watts may be fine, depending on what level of speaker and amps you want. Before you look beyond SF, lets hear what you are trying to do.