The lst diffs are a little different I know that the carrier is a little different the older ones are not as heavy duty as the new ones there are less plastic in them, but I am sure they are still miles better than the stock revo junk. I think the silver cases came from the aftershocks and the blues didnt start showing up till the lst's came out but color doesn't really matter at all. I wouldnt use the cup as jig for drilling unless you dont want to use it again, but that just me.