Ultimately, it comes down to personal preference. When I built NASCAR models, I cleared over the decals. For better or worse, all the NASCAR models look the same as the day I finished them. Some 13+ years later, none of those decals have lifted, peeled, chipped, flaked, discolored, or otherwise gone wonky. Some self-appointed internet expert may look down his nose at me for it, but hey, that's their problem, not mine