Before I start watching this show

I have not watched this show yet but I want to after seeing many people praising it. Before I start watching it I want to know - Is this show that good in terms of writing, plot and characters? Or it is focused more on the fun and enjoyable over-the-top action and suspense, similar to let's say Peaky Blinders, Sons of Anarachy and Banshee?(Let's be honest those shows are not that deep and good, they are more to be fun to watch, I really like PB tho but I don't think it has that GREAT writing)
Let's say I watch like 1-2 seasons of Justified and then I decide I want to go back to it later in the next year ot something, will I need to rewatch those seasons so I don't forget important stuff or it is not really the case in this series since the focus is not on complex characters and plot?
Thanks in advance