I recently picked up a Silver '04 919 with about 25,000 miles on it, but very clean.
I have been out of the MC club since '05. I have owned: 1993 Katana 600, 2000 Katana 600, 2001 Katana 750 and a 2002 TL1000R.
So far I love the 919. IT feels good to be back on 2 wheels, and my years on a Katana have thickened my skin against any idea that my bike is somehow inferior.
I'm also 45 now, and less inclined to make two trips per year to Deals Gap.
So far this has been the best resource that I can find for information about my new to me 919.
It took me a few weeks to realize that the previous owner had bar risers installed. I took those off and put the bars back to stock height. IT required a trip ato ACE for 4 new 1" shorter bolts, but was otherwise a simple fix. I also rotated the bars forward a touch and returned both perches to level afterwards.
It's running stock cans, but I am pretty sure they need to be repacked. It's not obnoxious, it's actually a nice mild growl, but I imagine it will grow louder over time.
My next quickie Project is to adjust the throttle play as I have noticed a little slop at times which leads to too little throttle one time, and too much the next.