I've just finished season 4 of The Sopranos. I'm still loving the show but season 4 was the worst out of all the seasons so far. In saying that, the final episode where Tony and Carmela break up was a very accurate portrayal of divorce and the chaos that surrounds it.
It's quite interesting reading through the Reddit post I linked about what people's favourite seasons and episodes are. Season 3 was phenomenal and my favourite at the moment.