I always find plug welding results tend to be better as long as you aren't using the gimmicky "weld-thru primer" panels. I hate when I have no option but those in the desired brand....for instance, I had to get the outer wheelhouses and front fender aprons in weld-thru because I wanted Dynacorn and couldn't find any offerings that weren't weld-thru...I don't like them because they always make the weld spatter more for no reason...there is no such thing as "weld-thru" primer or paint...if the weld penetrates, the coating burns off, plain and simple and even if it didn't...its still primer...primer doesn't protect metal much better than bare metal