The biggest impediment to better, radial friendly alignments in a Mopar is the interelationship of the upper arm adjustment eccentrics to camber and caster. More camber equals less caster. Even rear ride height impacts these adjustments and the stock parts are a big limiting facter. Tubular upper arms are mostly designed with this in mind and will come with additional positive caster built into them over the stock arms while still allowing a range of camber as well. This is why the move to tubular upper arms has become so popular.

Tubular lowers may offer more strength or less weight but functionally are no better than the stock arms.

Particular brands are not as a big deal. Most providers out there are reasonably good these days but if you have an overall goal on specific parts, you can mix and match parts to get better prices over time. I fyou want to simply get it done, then a call to a single vendor can net most the pieces needed.