As of now, I have caught up to the bleeding edge of Berserk.

Review summary
I would say that it is a top 10 manga with some of the most detailed art, compelling and tragic characters, and an almost biblical story that blurs the lines of morality. At least most of the time. If you're 18+ , I would highly recommend it; it's an experience unlike any other in manga history.

It is often deeply flawed in how it portrays character development and story progression, but I believe that it can still be a masterpiece. I'm not sure if this will ever end, but we'll see how true this holds after the fact.

Spoilers:

I'm not going to spend too much time writing about how good it is since countless others gave their 10s and praise, but it truly is great.

While I did love the Golden Age arc, I especially liked Guts' story of revenge and Griffith's desires. This duality is what makes the story so compelling. When I think about how this manga goes deeper than the surface, I think of the take on morality and how demons can be angels. Guts going berserk feels real, and the grittiness often makes me wonder what emotions I might feel in his position. Griffith's conquest could be perceived as true salvation. While he sacrificed his friends, he is uniting a nation and ending the endless wars.

It is, however, not without its flaws.

One such flaw is the ludicrous amount of gratuitous rape scenes. Echoing what others have said before me, gore and sex don't make a manga more mature, and this manga has plenty of mature topics that are far deeper and make me feel a lot more than a casual rape scene thrown in for shock value. Once you've seen one or two of these, you've really seen them all. Women are often written poorly in manga, and while some women in this are strong and multi-faceted, it seems like this one is heading down towards the harem genre.

Additionally, characters seem to have a "development switch" that changes them into entirely different people. The Holy See chick was weird and twisted and while I wanted to see her change and learn from Guts, she did a complete 180 and became a sister figure to Casca. Casca is likely the biggest example of this since her entire character doesn't really exist except in Guts' mind for huge swaths of the story. She's a shell of the character to the point that when we finally see her come back, I don't really care enough for her to celebrate it. I only wanted Casca around because Guts did.

Lastly for the major flaws and likely to be the series' whimper of an ending is the pointless traveling that the group does. I understand that Guts has a new crew as a sort of callback to when he used to have friends. It shows who he has become and how he's changed since the eclipse and GA arc. But many of these characters have very loose goals and one-dimensional characters, and when they do travel, they end up going nowhere in particular.

I can't really forsee this manga ending anytime soon, and I think that at this point, it could end honorably. They really have two choices here. If they focused for a bit and nailed the ending, it would cement its position as one of the greatest manga of all time. Or alternatively, it could go on and on and on, releasing a chapter every few months until there's nothing left to beat out of this horse.