My train of thought, they SHOULD be equally reliable. Mine wasn’t and GM covered everything but once a month in the shop was too much, and the type of things that went bad was the type of things that has nothing to do with it being a hot rod and it was all stock. Other people have had no problems and are perfectly happy with them, so I think I just got a bad one. I also take very good care of my vehicles and like taking care of them! Finding a nice size piece of metal on my drain plug magnet on the first oil change at 500 miles should have been my first clue. My Denali 6.2 and the SS get about the same mileage, with the Denali being slightly better but they are so close I wouldn’t make my decision on that. Myself, if the SS was not a lemon, I would have preferred it over the Denali but I like hot rods.