Rtak II- codura sheath, big blocky handle, finger choil, I'm lead to believe the warranty and CS are good.
Junglas- much better sheath, no-matter-what warranty (from what I've seen, this only matters if you plan on intentionally abusing/torturing the knife to failure) superior fit and finish, slimmer handle, spot on HT, excellent QC and CS.
I only have the RTAK II. Almost everyone I've heard from agrees that the handle needs some shaping. If I broke it I would imagine Ontario would replace it, I haven't heard of them not honoring their warranty (also haven't heard of too many OKC knives breaking, just a rare few). On my RTAK II, the weight is pretty neutral between the handle and blade. I would think a junglas with it's smaller handle would be a bit more weighted towards the blade. Especially if it's skeletonized under the scales. (The RTAK II is not)
The RTAK II's I've seen are around $85-100 shipped, add to that another $50-60 for a decent kydex sheath and you can be getting darn close to what an Junglas costs with a good sheath included ($180-200)