I'm confused, why are we even considering the 899? I think you missed some things when considering to two. One, even the base 1199 is a better value than the 899. Two, you can get a great deal on a low mileage S (mine is still for sale ). Three, this is going to be the big one. Almost any sport bike is honestly "to much" for the road. I had 07 R6 track bike, and I hated the power curve on that thing. I never in a million years would/will buy another one. Not for the street, not for the track. The 899 will have more than enough power to get you in all types of trouble. At no point have I been out for a ride on the 1199 and said "you know, this bike really is to much for the street". I have done something that was not meant to be done on the open road 100+mph but what bike wont. If you did not feel the S1000 was to much you will not feel the 1199 is. Is a very smooth and linear power delivery, nothing like the Dr. Jeckle R6.
Just my own .02
I'd rather have the 899 over the base 1199 any day.