I'd consider it a must on the rear lowers.
I have the Global West lowers now (spherical front bushings, del-a-lum rears) : best arms on the market (IMHO). The spherical bushings in them are starting to loosen up slightly and make a little rattling noise (after 15K or so miles) but it's very livable.
Before that, I had the Hotchkis lowers. They also worked fine, and are a HUGE upgrade over stock (regardless of the rear swaybar issue). As long as you keep them well lubed, the Hotchkis arms are QUIETER than stock (bushings are silent, and no creaking/popping like I occasionally got with stock lower).
The lower arm offerings from J&M, Metco, and BMR are also nice. I'd have no problem putting ANY of them on a car that I was gonna drive...HARD. "Bang for the Buck" champ right now is the BMR arms.
As for the uppers, I still have stock uppers (with 96K fairly hard miles on them)....they are getting a bit worn on the bushings, but otherwise are fine. I'll eventually swap them (have a set of Metco adjustables sitting in the garage), but it's not a mustdorightnowtomakecardrivable kinda thing [img]smile.gif[/img]