That's good to hear. It is very slow early on and the first season was definitely a slog, but everyone tells me season 3 and 4 are awesome.
Manny Coto took over for Berman in Season 4 (minus the final episode which is awful as Berman took over that) and Season 4 crams in all the prequel stuff we were promised from the beginning but never got until that point. It's excellent. had the series started off like S4 it would have had a full 7-year run.