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Given, I've not taken one over the Atlantic

Having actually taken a Falcon across the Atlantic, I can tell you that really feel the smaller cabin space after 4 or 5 hours in the air. Turbulence sensitivity is mostly determined by wing loading, not so much airplane size.

Anyway, in a business jet you get to see exciting places like Gander, Newfoundland... (the Falcon could have made London-New York nonstop, but we were doing Amsterdam-Denver).