Looking for 4" lift: Rancho Trail System vs Old Man Emu

Currently have a Rough Country 3.25" lift. Looking for for a 4" lift and narrowed it down to either the Rancho or OME kit.
Any experience or suggestions about each setup? Which one is more complete? Also, would it be okay to add leveling spacers ontop of the spring coils for an added 3/4 to 1" lift?

For the Rancho setup, I will be getting the Bilstein 5100 shocks.
http://www.quadratec.com/products/16031_400X_PG.htm




Old Man Emu
http://www.quadratec.com/products/16090_0300_07.htm

I'm not 100% sure but I think the OME kit comes with the cam style bolts that I've heard are a no no. I'm sure someone who knows for sure will chime in.
Have you looked into a Full Traction 4" kit? ( don't mean to throw another option at you )
http://www.full-traction.com/suspension/jeep/2007-2013jk/