The South Park game on N64 came out when I was a kid and I remember not liking it very much at all, so ever since then, I haven't had much interest in playing another South Park game, but I decided to pick up the SOT/FBW bundle since it was on sale and I'm very that glad I did.
On the advice of this sub, I am starting with Stick of Truth and I am loving it. I really like how it puts you right in South Park, with all the familiar locations, houses, and characters, not to mention the humor from the show. I also like how this was made before PC Principal and Tegridy Farms, the good old days when Randy was actually funny and didn't talk about weed all the time.
From what I've read, Fractured But Whole is even better than Stick of Truth. I'm not sure how it can be better since Stick of Truth is excellent, but I'm looking forward to finding out.