Yes, there are a lot of sound effects. But I don't think people realize how important they actually are to the show. They help mindlessly guide the audience as to what feeling they are supposed to be having. (Much like canned laughter or sappy music on any other show. I mean, think about it, canned laughter is WEIRD, but we accept it as part of the show because we know where to laugh.) The show is genuinely funny, and the actors are pretty adept. I don't think enough people give James Maslow the appreciation he deserves for playing such a shallow character as well as he does. You may hate the character for his selfishness, but that's the point. Maslow's faces and timing are flawless. All the other boys are just as good. They are clearly overacting a la The Monkees, but that's what makes it great.
To top it off, they all have amazing voices. I was shocked at the sounds coming out of these boys. (Mostly because I was expecting them to be terrible.) Kendall's voice is way beyond his years. Yes, there are some auto-tunes here and there. But I dare you to find a song these days that doesn't have that crap in it. It's "cool" for some reason. But these boys do have chops. I would also like to say that their covers of Beatles songs are also shockingly good.
I have forced several of my friends to watch this show, all unwillingly, and they all admitted that it is pretty funny. The show doesn't take itself seriously. It reminds me also of the show 2gether from MTV that I thought was hilarious.
Do I think their music is amazing? No. But it's catchy and fun. And if Snoop likes them, how can you go wrong??