As far as day to day ride quality, I doubt you are hitting the bump stops constantly. A small seam in the concrete or a small transition would only require a small fraction of an inch of suspension articulation. Even if your bump stops are only an inch away from hitting, you would need to drive over something that is at least an inch tall to cause that contact. Definitely with pot holes, railroad tracks and steep driveways perhaps, but not just a normal flat road. That can change if your shocks are trash causing the tires to "bounce" up but even with knock offs I would hope that aren't that bad already.
The only way the front end would be dipping I think as recoil is referring to would be heavy braking or if you are porpoising really bad after hitting a bump. You may feel more of that lean forward which you may not like but I would rather have that than an impact. Even then you really shouldn't be hitting bump stops in those situations, bump stops aren't for when the truck comes down under load, they are for when the tires come up due to impact. Shorter bump stops may help but yours are so small from factory I would not expect any significant change.
My coil sprung ram 2500 rides significantly better over bumps than my torsion bar sierra 1500, especially large bumps/impacts. I think a large part of that is the longer wheel base but either way I think the ram wins out. Not to say that one ram to another your coil should be riding better than the torsion bar truck, but no I don't think there is any inherent benefit of torsion bars that I would expect it to be the smoother ride.