Ride quality is very subjective. My bet is your shocks are fine, they are just stiffer than suits your personal preference. Like Pig and Overlander said, the 2.5's are set up to handle some pretty serious driving. If you aren't used to that type of shock or driving, you might find them to be a little on the stiff side.
Personally, I love them on and off the street.
I agree, 100% subjective.
But here's what I can't wrap my head around. I am saying this not to argue, but to express my confusion and hopefully become more knowledgeable. As far as I know, when a shock is designed, it is paired with a specific coil with intentions with proper function. So Evo manufactured their coils, and then specifically valved a king shock to perform in unison with the said shock and thus perform properly. Then, Evo offers a 2.5 series shock with reservoir that is advertised to work as designed with that same coil. Theoretically, in order for the shock to work properly with the designed coil, both the 2.0 and 2.5 shock would have to perform very similarly. If the 2.5 was valved differently, it would need its own coil spring to work as intended.
I could be way off base, but this is what I understand. Furthermore, for the coil and shock to work properly, shouldn't the 2.5 shock with reservoir just have additional capacity for fluid to account for the additional stresses off an off road environment and not necessarily different valving?
Subjective is it.
Most of the times people read plush ride and read how soft the ride is. They then have unrealistic expectations of a what plush ride is.
It's plush compared to everything else on the market but it's still on a jeep.
The current set up rides harsher than the stock Rubicon set up. The previous RK coils, although with different (Fox) Shocks, rode superior on the street.
I have some RK 3.5 coils I can throw in here and see if that effects anything at all.