I canceled Action Comics since it really wasn't doing anything for me. The only New 52 comic I'm enjoying is Batman. Are there any other series' getting massive critical acclaim amongst the new 52?
Also, with Marvel, I only read X-Force, ASM, and USM. Any books right now getting mass acclaim? I know Daredevil's supposedly really good right now.
Animal Man and Swamp Thing are the most consistently praised of the New 52 books and they are awesome. So awesome.
I'm not sure how widespread its critical acclaim has been, but the first 7 issues of Demon Knights might be my favorite story arc from the entire New 52 reboot and it needs sales help so fucking buy it!
If you were looking specifically for cape/tights superhero stuff, The Flash is the only book whose story and art has been consistently impressive from start to current.
Some would say Aquaman is great too, but I don't find the character or any of the storylines so far interesting, but Ivan Reis is murdering the art on that book something insane.
As for Marvel, Yes, Daredevil is amazing. Buy it.
Wolverine and the X-men is still one of my favorite ongoing superhero comics right now, despite my dislike of the "main" artist on the series, Chris Bachalo. I still recommend the series wholeheartedly.
The other Remender books, Venom and Secret Avengers are both amazing. Buy them.
You didn't ask about non-DC/Marvel but buy Saga god damn it. Second issue drops tomorrow.