Agree with gogogordy, though I haven't ridden a BV350. I love our GTV300 for urban or secondary road use, but wouldn't consider it the best expressway scooter. Plenty of performance, even two-up, but with 12" wheels things are pretty busy at 65MPH+. We bought it to tool around town & short trips to the lake on 50MPH two-lane. The GTS/GTV Vespa's are perfect for this use.
When garage room & finances allow I would love to have a maxi scooter with 15" or larger wheels & 500+ cc's for interstate/higher speed use.