The first one is pretty funny.
The second one is the best, however. It really shows how different SpongeBob was when he became weirder, but he doesn't have that look anymore, and with that being said, people apparently think SpongeBob still looks like how he did in season 6. Other than that, it's the best out of all of them, and is very well drawn.
The third one, I don't like. It seems too mean-spirited, and makes me see "old" SpongeBob as a jerk.
The fourth... that isn't a "new" SpongeBob vs. "old" SpongeBob picture.
The fifth one used to be true: SpongeBob just laughs obnoxiously. But, I don't see SpongeBob like that anymore. He's becoming a good, decent, and likable character, again.
The sixth one, makes me angry. Once again, it doesn't show how much better "old" SpongeBob is compared to the "new" at all. It just makes "old" SpongeBob look mean-spirited again, and it looks too sloppy.
So, the only ones out of these I can tolerate is the first, second, and fourth.