The more rigid rear corners of my current Supertop allow less flapping at highway speeds than the standard top that came with the TJ. It's not uncommon to drive 1-2 hours on the freeway to a trailhead where I wheel, so this is nice. It's still a TJ with a soft top but slightly more muted.
The sunrider feature is really only good offroad at low speed. With windows in at anything over 30 mph, it billows and acts like a parachute. To me, it's more of a pain than it's worth. If I want the open air experience, I'd rather just go windows out safari style or full top down with the alien shade.
I was looking for tinted windows for my other top and just came across this one for sale for a ridiculously low price, so I grabbed it. It was virtually NIB with tinted windows; the sunrider feature was just a bonus.
Unless you think you'd like the sunrider feature specifically, I wouldn't pay the premium for the Supertop over a regular one.