Frontrunner is hands down the best solution out there in my opinion. Lightweight aluminum construction, and the slats all have t-slots built in which makes adding gear super easy. My previous gobi rack as a nightmare when it came to quick gear changes. They make accessories for just about anything you could dream of mounting on the rack. I love the quick disconnects they have for the rtt. I can have my tent off in a matter of seconds.
If you need help on purchase, PM me I can help from a dealer perspective on most brands.
The teraflex is a nice unit, but its no where near as flexible when it comes to mounting solutions as well as rack space.