The entirety of scott snyders batman run is incredible (and greg capullo's art is probably my favorite), if you pick up the trade paper backs just be careful with the owl series though court of owls is #1 city of owls is #2 and night of owls is fill in issues from other characters that we didn't see in the main batman series. I get a lot of comics for the art and I don't really pretend to be the best at criticizing stories/writing as I haven't taken more than a few beginner creative writing classes but I don't think any of the comics on this list will have anything worse than a mediocre story (usually with imo incredible art)
Batman (vol 1-4, includes Court of Owls, City of Owls, Death of the Family, Zero Year - Secret City)
Planet Hulk - Super adventure based awesome story that I loved (the follow up world war hulk was kinda weak imo though)
Thor: God of Thunder (marvel now) (vol 1-2 The God Butcher, God Bomb) - I really can't emphasize how good these first two volumes are, which really surprised me since I've never really digged thor comics but they make it feel just absolutely epic in the greatest sense. If you like these you can feel free to pick up #3 The accursed, but I do think it kinda vreers a little in direction (though is still really good)
Allstar Superman - Just a great book, very classic
Uncanny Avengers - I'll admit this is probably the most likely for someone to disagree with but idk I liked avengers vs xmen and I think this was really cool follow up. Volume 1 is great, the next two volumes really vreer away from that storyline a lot though like everything that happens in volume 1 is just kinda like this huge plot device for the real story that happens in volumes 2 and 3
Batman and Superman - New 52 Vol.1 Crossworlds : I really like this series, the art is incredible and I really like the style of writing too.
I picked up New Avengers vol 1 Everything Dies recently and Captain america Trapped in Demension zone Z and I thought they were both aight, worth checking out and seeing if they get better (if you have to pick one new avengers was a bit better imo)
Superior spiderman's kinda cool but idk for some reason I just can't get behind it the same way a lot of other people do
Original sin started off really strong but it gets weird at the end, still worth picking up because it's changed a lot in the marvel verse
Avengers vs Xmen was an aight event, very action packed with some impressive panels
I've heard great things about xmen battle of the atom, that'll probably be the next thing I buy
Seconding batman long halloween and dark victory (great influential origin stories for a lot of batman characters) Y the last man and all hellboy ever