I can definitely agree on the recommendation to go with frame mounted, whether welded or bolted.
If you search, there is one person who posted a thread about the poison spyder tub mounted rails where he hit a rock and f’d the tub up, through to the b-pillar and door fitment. Don’t go there.
Similar experience here with the OEM “rubi rails.” These things are a rocker panel crease waiting to happen the moment you kiss an obstacle with them. Here are some pics of my LoD rails, which have seen a fair amount of rock time. The most recent was on the rubicon a week and a half ago. In the following pics, I have indicated with red circles where the creases occur when hitting the stock rails. You can also see how much I use my rails to pivot off of boulders and such. The shiniest spots are from the rubicon.
I would also pic the LoDs over EVO. I actually was sorry for purchasing the LoDs at first because they look a little cooler and fit a little closer to the body so you can squeeze through shit more easily.
FWIW, EVOs (and likely the VKS? Someone else can confirm.) can be bolted on as well. I bolted on my LoDs and did not have any trouble drilling/tapping the frame.
I body matched the LoD filler panels with two coats of matchining white and two coats of clear. These have been used as hi-lift jack points as well on a couple of occasions.
Tales from the rubicon:
I saw another rig there with the EVO rails where he had hit hard enough to make the EVO rails contact the body and make noticeable creases. Think it was also a 4 door.
I did a bit more bumping and grinding with my LoDs on the rubicon than anticipated but there was noob factor (first run) and my rig is on the lower side of lifted plus the LoDs do stick out a bit, which makes for a great step and family approval.
You hould also pay attention to tube wall thickness. I forgot who it was on the recent run but their thin walled ACE rails were hammered and dented to f*ck.
I took on my first dent with the LoDs on the Rubicon. See last pic.
edit: to be fair in the debate between tub and frame mounted, there is also a thread out there somewhere where a person bent a frame mounted rail (EVO or LoD - don't remember) into the rocker and created a hefty divet the size of a grapefruit or so - going from memory on the thread.
I might just even repaint them at the end of the season. LOL