I don't have first hand experience with either, but I've read plenty of coplaints about RC and their customer service. Love my OME
Their customer service is great, but their 2.5" kit has too many quirks for the novice to deal with. Things like the right rear coil spring sagging 1" after a few thousand miles, rear shocks with only 2" of uptravel requiring 2" bumpstops and the shaving off of the external jounce bumpers on the shock, etc.
I finally got my suspension as "right" as I can get it, and I had to do the following:
1. RC 2.5" kit ($300)
2. RC rear trackbar bracket (+$18) to center the rear axle
3. RC 2" rear bumpstop extensions (+$15) and shave the jounce bumpers off to obtain 4" of uptravel.
4. Front adjustable trackbar. I went with Rusty's (+$129) to get my front axle centered.
5. RC front quick disconnects (+$50) and cut 1.5" off of the sleeves to get the front swaybar back to proper level.
Total: ~$512.00 + shipping
You won't need the front adj trackbar and the rear trackbar bracket if you don't care about your axles being centered. I quickly tired of the slight bumpsteer/sway/wobble induced by the axles being offset 3"+ from F to R.
That said, I'm still not totally satisfied as I refuse to run a 3/4" spacer on the right rear only to level the rear. If the rear left spring doesn't "wear-in" and develop the same amount of sag soon I'm just going to fire-sale the RC springs and shocks and go with Rusty's 3" springs and Bilstein 5100 shocks.