I binged the show for the first time over the holidays a few months ago, and honestly, despite all the 'bad rep' about S3 etc I was hearing, I found it all very engaging and enjoyable and wasn't bored at any point; always eager to continue the next episode. Maybe binging the show instead of watching it week-to-week alleviated some of the gripes people have with the show?

But yeah, I definitely agree that S1 and S4 were the best overall. I'd say the other seasons, while not flawless, were definitely still solid though, and the way S5 wraps up makes OB have one of the most satisfying conclusions to a show I can think of.