I haven't played either of the first two games, but Saints Row: The Third was an absolute blast, and ridiculously over the top. An announce trailer just came out the other day for IV, which is due out end of August. Seems as though what was originally planned as an expansion for III has been rebadged and expanded to be a whole new game now. Looks a bit more-of-the-same, with some small additions (and seemingly superpowers), but I guess it's not all bad since I enjoyed III so much. Time will tell exactly what it is though, and whether or not it's worth the price tag