Share 'Student blogs...'

I am a fifth grade teacher. This year, I just have a classroom blog, and the students add comments to it. I'm considering expanding it next year, but where to go... I'm on edublogs, I could create accounts for the kids, keep one blog, and have them be contributors. I could create learnerblog accounts, and have each of them have their own blogs. Or, I could try ning, but I'm not sensing enough in…