I wanted something for a similar mission and chose the F800R. The STriple was in the running, and my dealer was not a dick, but I wanted heated grips and ABS, and the luggage options for the STriple were pretty thin. That was this past summer.
Now the STriple has ABS, heated grips can be done aftermarket, and I don't find the pressing need for bags, so I'd take a long look at the STriple if I were making the decision now.
That said, I'm very happy with the F800R.