The original Teen Titans cartoon was surprisingly good at times. Not ALL the time, but often.
It didn't really hold a candle, IMO, however, to the original Batman/Superman/Justice League DCAU shows.
Teen Titans Go is silly in purpose, and I appreciate that, but it's just not my thing.
P.S. To whomever comment on Slade and who he was.........he's Deathstroke, the Terminator. Though they never called him that because it's a kids cartoon. As for his "Connections" to Robin, I don't remember that he really had any from the old 80s comics the show is (mostly) based on. So I have no idea where the show was going with that. I did like/was surprised by the final seasons' use of a bunch of obscure enemies though, especially Brain and Monsieur Mallah (considering they were Doom Patrol villains), etc. Pretty entertaining.