New 52 or Marvel NOW!(What comics are more interesting)

Got some cash to kill, and it's been awhile since i've picked up a comic. So I was wondering which batch of comics would you guys recommend I was think on getting Uncanny Avengers but I was also wondering whether or not it would be worth to get some Justice League books from the new 52. I haven't read any of these books yet so I was wondering where should I start out, and which ones are the most interesting story lines, and which are the better reads.

Thanks in advance