My Nephews rig has the rro bolt on. It seems to work fine,
No problems with it, it has been on at least 2 years.
(It was on the truck when he bought it.) I would tend towards the weld on version myself, But hey I have a welder and like doing that kind of work.
Our kit has been on the market for several years now and is trail proven under some serious circumstances. We've even done some serious jumping with them at the sand dunes. Haven't had a single problem with them yet.
We have also recently introduced a 7" bolton combination kit we call the "Trailblazer". Perfect for someone who wants to run 33's. Might even fit some 35's with a taller set of shackles as well.
Less expensive than any competitors too. Email me direct if you have questions.