I use the OpenPilot CC3D. I have never flown with the NAZA, but I really like the CC3D. I was very impressed with the software and if someone like me can fly with it, it has got to be good
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I am subscribed to Juz's channel on youtube (username juz70). He is an Australian Park Ranger who flies exclusively with the CC3D board and he has experience with different frames. Here is one of his videos with the QAV400 frame:
You can see which frames he has used at juzfpv.com. I pretty much copied his QAV500 setup. I think his videos really show off the capabilities of the flight controller that I haven't taken advantage of yet.