Of the ones you have listed, Sway-A-Way are probably the highest quality. I am extremely happy with mine. I don't know if I'd say they smoothed out the smaller stuff all that much, but they eat up the bigger bumps at higher speeds way better than stock TRD. Ride is stiffer, but better. Fabtech is another choice that is very similar to the SAWs and probably a better quality than the others you have listed. I recently pointed out on another post that a quality leafpack and shocks in the rear will give a more noticable ride improvement on the road than the various coilovers will on the front. For a pure street queen, I'd get the least expensive CO in the front (still an improvement over stock) and Deaver leafpacks in the rear. Another option for you might be a full OME suspension. I think you can pick the full package up for about the same price as a pair of new SAWs.
