OEM sliders DO NOT SUCK. I actually think they are the best ones out there. I have pounded the snot out of mine and they have held up great, and the powder coat is far superior to RR. I visited a buddy this weekend and he has been running the RR for 2 or 3 years, and his powder-coat looks awful. If he doesn't do something to them in the next year...they will rust into nothing. His wife mentioned that the RR's will occasionally leave mud & salt on her pants-legs from getting in and out, because they stick-out quite a bit, (good or bad depending on your tastes). I personally like the "tucked-in" style of the OEM's but, I do have to be careful and watch my gutter-rails (where the roof meets the top of the doors). A lot of people probably don't realize it but sliders also keep trees off your gutters. The further they stick-out...the more protection they will provide at the top of your rig. I have had some close calls with the OEM sliders in regards to this but, I feel the trade-off is worth it to make entrance and exit easier. My rig is very tall and difficult to get into. If you are vertically challenged, the OEMs sliders are even better...they have optional bolt-on steps available. If you need steps...you might also check out N-fab. I believe they have (2) versions including a one with similar bolt-on step.
Schwartzy has the beef, of course. I have not heard any complaints with his.
Regardless of brand...if you buy some "raw" sliders, I recommend spending the money for a QUALITY industrial-grade powder coat. Due to their location, sliders take the full brunt of road salt, sand, and weather...so don't skimp on the coating. The best slider in the world will not last (in the midwest anyway) without a protective coating. I think 90% of aftermarket 4WD parts have very poor coatings....just enough to hook the customer, and sell the product. The coating on my GM sliders is very good, and after 5-years I have zero rusting.