This thang is sweet!
I really like them; I found the stock springs a little mushy and the Highlifters tightened it up nicely. There is a lot less body roll in the turns. I bought the install tool as well and it was so worth it--huge time saver.
Perhaps a little, but I see it as less mushy. It certainly does not "beat you up" upon hitting bumps and the like. For me, it is just a firmer ride and I am glad I added them, especially since I have added a Warn XT30 winch to the front. The winch is not all that heavy, but every little bit adds up...so it makes for a stiffer ride?