I've had both...
Pros: Great fit, easy to fold, easy to take completely on/off, windows come out easy, easy tailgate access
Cons: Looks like every other Jeep, expensive, Sunrider a bit of a pain, bulky storage on Jeep and off.
Pros: Great fit...OEM quality, safari top is a nice to have on a 4-door, Sunrider is a snap, very cool look...unique, easy storage off the vehicle... takes up little room, fairly inexpensive
Cons: The biggest pain in the ass to install (for the first time), Aforementioned tailgate bar is garbage (just ordered Mopar OEM), ingress to tailgate is bothersome (but no worse than OEM softie)
I never used my OEM top. I will use the Trektop NX Spring~Fall. My vote is Trektop NX despite the miserable initial install.