Oh man, tough question.
Honestly, i just don't know.
The SH is the best lightweight (for my 220lbs) scoot on the market. I rips, it tours, it does everything i want. I haven't used the Vespa since i bought it..
..but if i had to get rid of the GTS, i would be genuinely heartbroken.
I take the cover off of it and smile.
Nah, i'd sell a booze wrecked kidney before either.
All the best to all.