I mean, there's really no "best." A lot depends on what you're doing with your truck, whether you're adding rear ride height, how much rear ride height you're planning to add, if you're going to run constant weight in the bed, etc. In general, if you're going to be using your truck hard enough to justify a set of front 2.5 coilovers, then you should probably consider the Fox 2.5 PiggyBack Rear Shocks.