I got the Django book and liked it and I had no problems with my actual project itself in terms of having enough "community."
However, now I'm in the "figuring out how to deploy it" stage and it's been a real pain. My free webhost supports RoR and python, but doesn't have Django installed, I don't want to spend the money on a VPS, and while there's been a recent surge of beta Django hosts, none of them have worked out for me. (I.e. I tried out gondor.io, it wouldn't deploy, I asked for help in the IRC channel, someone said they'd "look into it" but never got back to me.) I'm currently rewriting my models (db structure) for Google apps since it's basically my last hope.
I really love Django, so it pains me to say this, but you might want to check out RoR.