Connecticut River, Gillette Castle state park, Devils Hopyard state park
Not the quickest route across the state line, but some nice sights; farms, water, fields, and not a whole lotta traffic
I frequently hit this route from Saratoga Springs. Some nice elevation changes and water to distract you from the technical and dangerous curves. Watch out!
Really nice combination of curves and scenery, the S bend near to Boltons Landing was particularly fun.
Watch for the occasional cyclist