If I had to choose between the two it would be the Sonus Fabers all day long! Another speaker that sounds similar to the Grand Pianos are the Soliloquy 6.3s. The Sols are a tad more detailed and have much deeper bass but cost less.
Another sleeper that spanks both of these speakers IMHO is the Eminent LFT VIII. With tight bass,super transparency..it has the dynamics of a box speaker with the speed of an electrostatic. For the asking price I haven't heard a dynamic speaker several times it's price that could do what this speaker is capable of. I have a good friend who dumped a $6500.00 pair of box speakers for these. After hearing the comparison I could only agree.
Good Luck!
Another sleeper that spanks both of these speakers IMHO is the Eminent LFT VIII. With tight bass,super transparency..it has the dynamics of a box speaker with the speed of an electrostatic. For the asking price I haven't heard a dynamic speaker several times it's price that could do what this speaker is capable of. I have a good friend who dumped a $6500.00 pair of box speakers for these. After hearing the comparison I could only agree.
Good Luck!