Most of the time, I love the New 52 costumes more. But Nightwing is a total exception. I loved his black and blue so much more because a lot of the Bat-family is all red and black. So when I saw New 52 Nightwing I practically cringed. I was like "Why DC??" Not that I don't like New 52 version (I still think he's as awesome as ever), I just love the classic costume so much more.
I like Nightwing more in blue than in red. It gives him a good contrast to Red Hood, for one, and makes for good duality with Red Robin (Even though Tim has a truly awful name). Dick's also just too mellow to wear black and red.
I don’t mind the red but this is much better. Not only do I think it looks better but on a practical note (something that should be taken into consideration when dealing with a non powered character) even this light shade of blue blends into the shadows better then the red.
This Nightwing reminds me of the Arkham City Nightwing, boy would I kill to play as Nightwing! and as much as I get what DC is trying to do with the new 52 and everything I still like the blue better. I was never a red person. I think the best looking nightwing would be the new 52 with Blue strips instead of red.
Maybe when he became Batman he became more centered to his roots and decided for the colour change and redesign to reflect on his time as Robin... hence the red.... just sharing an opinion