My RS5000x story began last summer. I had worn out RS5000 that were no longer of appropriate length after I'd added some lift and rotated my rear axle for the SYE, so I bought RS5000x due to their popularity. At first I liked them...they were an improvement, and by the fact that I was going faster than my wheeling buddies on rough roads seemed like they were good shocks, but now, they are annoying me (and my wheeling buddies I think were ALL on Bilsteins...another TJ, a Tacoma, and a JKUR).
I spent 5 hours in my LJ yesterday and now with the tires better balanced I could really focus on how every time the rear would go over a bump...even just an above average expansion joint or a ripple in the asphalt, the rear would bounce enough that my head would bounce off the headrest like a dribbling basketball. I don't know if it's just a weird side effect of the change in weight distribution and wheelbase or what...I don't remember noticing that when the exact same suspension, shocks, and axles were under my TJ.
I'm meeting a guy to sell my hard top later today...so I'm about to lose another ~150 pounds off the rear axle which I don't expect to help. I may first try the SJ in the rear and keep the Rancho's up front. The B8528 is a really close replacement for the RS55256. I'll have to do some thinking for the front though. SJ makes me choose between keeping my downtravel but losing a half inch of uptravel with the B8549, or keeping my uptravel but only having 3.5" of downtravel with the B8525. KYB 565096 lets me keep my uptravel but lose 1.5" of down that I probably shouldn't be trying to use with shortarms anyway.