C Beard, you won't go wrong with either the adjustable Rancho's or the Bilsteins. First, it's so cool to dial your ride with the Rancho's - I tow heavy, light & run empty and I never have a ride I don't like. Heck I have 19. 5's and I can run fast down bumpy roads - not too harsh cause I change em for my conditions.
If your conditions and / or loads don't vary like that, go with the Bilstens - they are flat out the best 'non-adjust' shock anywhere. I just put a set on our '96 Ram Van - huge improvement over the stockers. I considered using Rancho 9000's on the rear, but didn't cause I never tow heavy with the van. Even if I did tow a medium load, the Bilsteins are fine.
I think the Bilsteins have more sophisiticated valving than the Ranchos, so their ride is likely better in most circumstances.
Forget that silly remote if you go Rancho - it's very simple to adjust all 4 in 30 seconds flat, manually - the cab control is trouble prone - gadgetry gone wild.
Both Rancho and Bilstein have a lifetime warranty, so keep that reciept... . take care
David B.