Just yesterday I replaced my stock X springs with JKU Rubicon springs I really like the difference it looks good. So far it helped with the sag of the front end with the winch. I also have a RC 2.5 Budget boost.
I dont have the greatest pictures of it but here are some for comparison.
Here is my rig with the stock X springs
Here is my rig this morning with the new JKUR springs
Heres a picture when we were putting on the springs. we had just replaced the front. Can see a difference, or at least I can because in this picture the front is sitting higher than before, the front rake it used to have drove me up a wall so this is a big difference.