Unless it is built around a equivilent suspension system, i.e. Alterkation or XV stage 2, all retrofit R&P kits are going to be a compromise of turning radius and bump steer.
With a good, quality built, firm valved OEM style steering box, you get nearly the same steering response as a R&P with only a slight weight penalty. I figure it this way, if the good old recirculating ball and gear steering box is still good enough for Mercedes new products, then there is nothing wrong with them in my classic mopar.