I Watch Dexter Online

I haven’t seen too many (only 3, I think) of Dexter’s shows this season, I usually wait to buy the dvds of the shows I love since I’m gonna buy them anyway, but someone I know said it wasn’t that great this year. Should I still buy it. Is it still great Dexter-tainment? Sorry about that last bit. By the way I mean the Showtime show not the cartoon.