QA1 is the old Caps Automotive design, I've used them a few times, before they were sold to QA1, both adjustable upper & lower tubular control arms & dynamic adjustable strut rods, with O/S sway bars, really makes a big difference in handling, easy install & looks allot cleaner, with allot more adjustable too... I have a few friends that went the Reilly Motorsport route, kind of pricey, they look good & they seem to like them... I've used Hotchkis stuff on a couple GM's but never any Mopar's yet, nice quality stuff... never tried the XV they look OK, I don't know anybody that has them either ,so I could really comment on there quality or fit... It really depends on what your trying to do whether it's even really necessary, good O/S sway bars front & rear, good gas &/or adjustable shocks on all 4 corners, good upper & lower ball joints, good tie rod-ends, good upper & lower bushings & boxing the stock control arms works great too.... Also I recommend you add maybe some better/larger if necessary torsion bars, sub frame connectors & move the battery to the pass/side rear trunk, will help allot with the car balance/handling also.... there's also Magnumforce Racing has all the same quality components too, used a few of his parts over the many years.... good luck