Sonus Faber Grand Pianos vs. Thiel 1.6's

I have lived with the Grand Piano for several years now and all I can say is that I loved them as much as ever! I'm still amazed some times of the sound they produce.

Good luck with your tough decision!

I've sold both the Theil and Sonus faber lines. I find I do like both those speakers. I do like the 1.6's overall, and think they are a tremendous speaker at the price range, or any! I'd chose those first. Both however have their strenght of clarity, detail, and balance. Yes, I think the Piano's are a bit warmer in body, while the Thiels are razor clear. They both need differnt gear ultimately...season to taste. I think you could however get superb sound from either with the right mix.
I would still however lean towards the 1.6's at the very least because they are a more sensitive speaker, thus easier to drive, with a bit more nimble dynamic to the sound. You have more options.
Still, it gets down to tastes. Me, I like both, but lean towards the 1.6's for movie/music if need be. I think it's a special little speaker actually. But, I'm sure some would differ, depending on experience and associated gear/setup, etc.
When Stereophile reviewed em, they hinted that they thought this should be one of the "speaker of the year" choices..I agree.

Razor clear versus warm. Real music, at least to me, is neither. Any speaker which, of its own performance "speaks" with too obvious of a voice, is noticably flawed.
I find the THIEL 1.6's too forward.
Oddly these speakers are so diametrically opposed to one another it seems strange you would narrow your choices to them. Perhaps in your lexicon of accuracy you have decided to pick something with the 'strongest' voice.
The Fabers will give you less 'apparent' detail, but more 'musical' enjoyment.
I hate to say that, after having worked for THIEL, but it is an honest answer.
As always, opinions are for those giving them. Extended, hands on will tell you more than anything else.
Best,