I really like the OME setup on mine, I did not buy a kit but itemized the parts as I saw fit best for my needs. It is expensive, so I wouldn't recommend it unless you truly are wanting top notch. I ran the RC 2.5" for a while and it was not all that bad, mainly just the bushings and shocks sucked. Fix those for an extra few hundred dollars and it's not a bad setup. Me personally, would go OME again though, the ride quality is just much better. I don't know what they do but it works.
Honestly though if your stock stuff is in good shape, I wouldn't think too negatively about just doing a 1.25" body lift. Simple, enough clearance for 31's in most cases, and doesn't mess with any of the driveline. Keeps everything happy. Then if you wanted better ride quality you could just get some new shocks which makes a big difference on stock springs.