I can not speak for the 12-16 models. I went from an '05 to a '17 and WOW! what a difference! Its a different bike. Feels lighter, handles better, power is better everywhere. I like the new cams, the spacing of the transmission ratios, etc., etc., and so on. I liked the '17 so much I finally sold my Triumph Tiger 1050 as I just wan't ridding it any more. The DL 650 is better suited for the back road ridding I do here in Kentucky. No need for a bigger, heavier, or more powerful bike here where I live.
'17 DL 650 Vstrom, Best value ride of all time. (replaced our '05 Wee)
'07 Triumph Tiger 1050 Feel the Power! Culled from the herd...gone but never forgotten.
BMW K1200 GT, Gone but never forgotten
BMW K100 RS, Beautiful German engineering
Husky 250WR, (1986) Last of the real Huskies made in Sweden
Bultaco's ...for those of you who remember....
A long list of so many others.....
Happiness is having a motorcycle with more power than you will ever need.