To be honest, it's exactly what I have right now.
Ducati Diavel.
Comfortable, not-common, fast enough, maintenance was never an issue, and now it's been with me already 3 years
In the last two years I had been juggling around purchasing a new or another bike..... thought about the panigale many times but never brought myself to because simply its not a comfortable bike to ride, it's too much of a track oriented bike and for track I have my Ninja so I am good with that for now
Perhaps in the future I would add a track bike, but for now there is nothing I would trade for my Diavel.... at least not that I know of yet....