I've ridden both and bought the Cb1000( good deal, not because I liked it better). I have to say, the 919 is probably a better bike. Fuel Injection, newer and I believe there is a greater aftermarket for them available.
I was fortunate in that one of the previous owners has already piped, jetted and installed a V&H programable igniton on my 1000.
I've only ridden it 3 times in as many weeks( folks dont know I bought it) but from my experience between the two I liked the 919 better.