Variation as in someone ending their blockstrings the same way every time, like say with a 3C or 3C 236A. I say variation for the sake of risk-reward. Totally true that 3C is just the normal better option, but I'm saying you can 5D to do something different, and possibly snag a hit with. Plus it isn't hard to confirm off of a 5D as long as you have the heat, and you're willing to spend it. I probably use 5D more than I should, but I'm just saying the option is there lol.