Red Dragon was good, for sure, but I actually preferred the original version, Manhunter. The Silence of the Lambs is still one of my favorite movies of all time. I don't know how many times I've watched it since 1991, but it still puts me on the edge of my seat.
Hannibal, otoh, could be one of my least favorite flicks of all time. A terrible disappointment after "Silence".