I can only go off of the shows that I've watched....
1. Spartacus- This show to me is one of the best to ever do it. It's a show made for real nikkas. Great characters, great action, epic fight scenes and gory finishes. Bad bytches, good sub plots (mad scheming). Classic dialogue. (mad sonnings) There's nothing I could fault the show with. They lost their best actor after the 1st season and still managed to make great seasons after that. Not too many shows can do that. This show also has the record for best season finales as well.
2. Borgias- this show is mad fukking slept on. Not too many people gave it a chance. It's like Spartacus light. What I mean by that is it pretty much has everything that Spartacus has but in smaller dosage. It got bad bytches fukking and good fight scenes, good dialogue and cats be getting sonned every episode. Good characters. Good intrigue and multiple subplots. It has action but not as much as Spartacus but violent shyt does go down. Pretty good show. I enjoy it. Never seen a wack episode.
3. Vikings- this show is damn good, it's prolly closer to Spartacus with the action but it's in it's own lane. It's pretty good for a show like this thats not on a premium channel. I can't put it over Borgias because it'll never be able to push the envelope the way Borgias and Spartacus can. Great characters. The season finale was a let down due to the lack of action, but that's my only complaint. Main character got swag out of this world. Good pace as well.
4. Da Vinci's Demons- this show is good. it had to grow on me because the 1st episode was weak as hell, but it got better after that. The characters are good and nikkas be getting sonned with the dialogue. Mad knowledge be getting dropped too. It's not heavy on action, but it has it's moments. It's more of a thinking man's show. It has it's own lane though which is cool. It takes place during the same era as the Borgias, but it goes a different route. Borgias is more serious toned and brutal/realistic, while this is more lighter but still got bytches and explosions and shyt.
Game of Thrones- I caught a few episodes and was never really impressed. It's too late in the game for me to get into it now and watch from the beginning. It's cool cuz I honestly don't feel like I'm missing out on anything. I hear great things about the show so I would never knock it or clown anybody for fukking with it though.