RC seems to have been the choice for many. More well known brand etc. If they had the WK lift when I bought I would have gone with them.

But I have ran my RRO lift for 4 years (60k) and I have zero complaints. Most complaints about RRO is their customer service (not sure how they are now) but I bought mine from a local dude so no issues with that.

Edit: Mine seems level, if its off it on the back side by half an inch. Maybe time to look at new spacers or new springs back there