I love the versus, but need bike to be comfortable on highway for 500 mile days. any comments?
Those are the 2 bikes everyone looks at who buys a Vs. 650, including me. Off road is the more predominant factor to opt for the Suzy. But a (cushy) comfy ride may be another. They sure have a lot of faithful owners who spend big bucks on them (and their vendors know it too); whereas the Vs. 650 is an economical offshoot from the Ninja 650 and one of the most economical bikes there is to buy and maintain.
For me though, it was the midrange cam (torquey speed) and super-moto touring (USD forks.) As well, I have always felt more confident on vertical singles or twins and think they are the best handling bikes there are, tucked compactly below your knees. Mid size vertical twins or singles do well in racing of all types with the BMW F650 single and the Vs. 650 is like that but on steroids.
If you have the money and feel more confident is the main thing. I like knowing I can get out of the way of cars quicker more than anything else. But those 2 bikes specs are so close, which ever you feel more comfortable is the determining factor (and, of course, you have the extra cash.) The Vs. 650 is the smoothest bike I have ever ridden on, but I try to fine-tune my handling all the time too. The Suzy will probably be easier to be more (cushy) comfortable, but I think riding posture is all you need with a stock seat and a gel pad: it feels like magic to me. I think the stock Vs. 650 seat is the greatest I've ever had ergonomically (if you ride with correct posture in a wide range of positions, and God Bless Speedy for keeping all of our old battered knees in the right position.)
Since you have I assume a 2015, you have one hell of a bike(!) so try it before you do something you will regret (severely.) If you are talking riding in East TN: THAT'S GOD'S COUNTRY and the best roads in the world. I can tell you now that you will cry with telescopic forks, 50 more pounds, and NO midrange cam when you hit those mountain roads. That cushy comfy ride is a dual edged sword, where as the Vs. 650 can be as comfortable as you need touring and then rip the hilly curves up better than anyone. ymmv.