Triples are without a doubt THE best engine for a motorcycle. Now if Yamaha could make a 1300cc triple sport tourer, I'd be all over it.
I like the idea of a triple, and that Street Triple by the OP looks awesome...
...BUT I replaced my XS Eleven(four) with an XS850(triple) with insurance money in 1980 after the Eleven got stolen...and all I thought about was how puny the HP was compared to the Eleven. I guess I really look at the response of the throttle more than how many pistons it has.
All things being equal in the response category, I would love a triple.
I need a rich step daddy like Beemerdons or somebody like that to buy me a bunch of different bikes so I can compare them all.
But if that doesn't happen...I'm still good with touring the world on my FJR.