SPCs have good adjustable and are affordable, though a history of higher than average failure rates and questionable quality have given their name a stain. The newest design in the last year or so have been much better, but it's still a "buyer be cautious" item. I run the SPCs myself and have had an issue years ago with the bushings wearing out prematurely; they gave me a new updated set of UCAs and I haven't had any issue with them off-roading.
Just to give you both sides of the story on those UCAs. There's other brands including some "EBay" ones that seem to have been okay for some members. If you search I think you'll find a lot of information on various options.
