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I have the RRO super sliders. Absolutely love them; they're worth their weight in gold. They saved my door panels more times than I can remember. I recommend going with the super sliders over the rock sliders, especially if you are using a roof rack; the step is invaluable. I also have the diamond plate covers which add style, but more importantly keep most of the mud, snow, sand, etc. off your doors. The installation was very easy and the results are absolutely solid. I've even jacked up my KL off of them.
The MOPAR sliders are way too expensive for what you get. There's an excellent YouTube video on the MOPAR installation that is very helpful in removing the OEM plastic body trim. Some of the installation techniques will also apply to the RRO installation.