I'm the same size as you. My wife is 5'-9". We have plenty of room on the Vision. I don't smoke but if I did, I would have no problem with a lit cigarette while riding the bike at highway speed. I do have the lower deflectors but put them on to keep the legs cooler on hot days, not for buffeting. I found the XCT to be much more cramped, especially with the legs. I own a Vision so I am biased but for me it is a superior motorcycle when compared to a XCT or anything else for that matter.
2014 Vision Nuclear Sunset
XM Radio Module
Sequential Turn Signals F/R
1/4 Turn Throttle Ring
HID Headlights & Cyclops
Vic Shop Tweaks: 124 HP / 121 Torque
04 Purple Thunder Kingpin (Sold)