I used the SB15NAC30-4 in a 2 way with the sb26stac and it is excellent, so I would expect great performance out of the sb17 as well.
I haven't heard the Satori, but everyone seems to say they're exceptional drivers, and they supposedly have a more advanced motor design than the SB series, which is a lot of where the lower distortion and higher price will come from. Also, I wouldn't worry too much about the dip just above 1khz on it, usually small sharp dips like that aren't very audible (it's the spikes you need to worry about)!
As for which I would choose... I think it really comes down to what your goals for the build are. If you don't mind spending a bit more and are going more for a no compromise build, then I'd go with the Satori due to the lower distortion, more benign breakup, and the stellar reputation they've got. If you don't really want to spend that much, then the SB17 will not disappoint you either. What a wonderful problem to have, picking between two excellent drivers like this!