I have the 1.5\" Rough Country lift>
I have the 1.5" Rough Country lift, and I like it. Even the 1.5" kit came with spacers to lower the transfercase, and wedges on the rear leaf springs to angle the rear pinion up.
I've had it on for about a year and a half now and no problems so far. Rides a bit stiffer than stock, but not too bad.
I used to rub my 31's on my flares front and rear, probably didn't help my stock springs were flat and the leaves separated. Now I don't rub anymore, although I haven't really taken it offroad or had the suspension at it's excursion limits since then, except for hitting the odd pothole or driving over a curb, lol.