Nickelodeon, for sure.
I'm old so I remember Mister Wizard, Double Dare (and all the other versions of it before the POS that is 2000), Gullah Gullah Island, and some other awesome amazing shows that didn't teeter towards "fart jokes" and "poop jokes". It was just an easier time to enjoy things. Our minds evolve and while there is still some good programming on Nickelodeon (yes, I said it)...Nickelodeon was better than CN, imo. I don't think CN was horrible, but my ADHD mind would not go to another channel except for Game Shows if I couldn't get Nickelodeon on at that time. O_o