Can I cut here? (QA1 upper control arm issue)

QA1 makes good stuff. How they compare to the other stuff out there depends on your application. I think that the QA1 stuff is great for a street car. The added built in caster means better alignment specs (more positive caster), and the fact that they have bushings and not heims should mean they'll last longer on the street than other tubular arms with heims. They also have a pad so they work with the stock bumpstop location, which a lot of the tubular arms won't.

The only possible drawbacks are having to clearance the mounts and the fact that they aren't adjustable, so you can't dial in more caster for your application. They just have a fixed amount. But with more caster already built in that shouldn't be an issue for most folks, and it means that the alignment is done the same way as stock UCA's just by using the camber bolts. Adjustable arms mean you can dial in almost any kind of alignment specs you want, which is handy if you need a more extreme alignment for autoX or road race. It also makes the alignment process more complex because you have adjustments at the camber bolts and also at the UCA itself. But for a street car that shouldn't be needed and the additional built in caster should be fine to set up some great numbers.

So they might not be great for everyone, but I think they're a really nice option for folks that want to run primarily on the street with a more modern alignment without having to deal with heims or making your own bump stops.