It's a great line... you get strong pressure all the way into the endgame usually... it has one of the highest winrates as black of any d4 defense, and it's lots of fun, it's also a good way to learn attacking chess.
I also really like how it handles the zuckertort since you can play the spielman-indian, often leading to a pseudo-benko... it's actually a sound line and gives you a very novel position. This is one of the few effective ways I've found of really throwing off a zuckertort player.
Only thing I'll say is there are opportunities to diverge from the main benko line and I think this can increase its effectiveness as you climb in elo, since once people start to know the king walk lines and some others it can become a bit formulaic. But for now you probably shouldn't worry too much about that.
I've been preparing the Benko to add to my opening repertoire with my coach recently (I play the KID currently). Opinions, ideas, comments much appreciated. I can also provide links to some lichess studies if anyone would like to study it as well.
For those who don't know it, it starts off as 1.d4 Nf6 2. c4 c5.