Quick background. I'm about to put on an ARB bumper with a 12k winch stuffed in it onto my JKU Rubi. I am curious as to anyone experience with Rusty's coil springs versus TeraFlex. All I want to for the time bing is to bring the jeep back level. Rusty's coils claim a 2 in lift and TF claims a 1.5in for the JKU and 2.5 for the JK. TF states that their springs vary from the 2 dr to the 4 dr for the same spring because they're progressive rate. TF is 2x the price and I am just curious as to whether or not it is worth the price difference and why. I don't mind spending the extra money I just don't want to without knowing why.