I actually just upgraded to this series on my 98 ram 1500 slt crewcab. I added a leveling kit, and brand new bfg all terrains so take the opinion for what it's worth, because the setup may not be what you're looking toward.
I've found the ride got a bit rougher. You feel every jostle, hole, bump, etc. Could be because they are brand new... could be the new tires... But in any case, you feel the ride a lot more.
They've held up fairly well for the 3000 miles I've put on them thus far.
They are a good shock. I got them for a decent price at a 4 wheel expo. So can't really complain too much about paying for the name either.