I have the SLR Stage version UCAs up front and the sway away torsion bars. What it's allowed me to do is to crank the front up to 39 1/2" (ground to fender, centered through the wheel) and get an alignment that's pretty close to 100%. In fact, I just had an alignment done and I'm closer to perfect than I've been in many, many years.

I can crank the torsion bars a bit more and may do so after the next run, depending on how my current clearance feels while off road.

So, what does the extra money buy you? Well, you can lift the front a bit more and have the ability to get an alignment, which would be a challenge with the stock UCAs. Besides, it's not just an inch and a half. Without trying too hard, I gained about 7" - 9" up front, with the ability to go a little higher if I want to rest on the bumpstops. So, now, I can easily run 33s without any significant rubbing and that will help my approach angle, clearance and trail selection.