If you really like BBs the decision should be fairly easy, Z30, great screen, large size brillant UI, AND a possible game changing move is coming with the upcoming (and recently leaked) OS 10.2.1, that lets you install android apk files directly on the device AND even install the Amazon store for example. And with Android 4.2.2 runtime now supported many MANY (although not all) android apps now work. And we have some hacks too.

Ok now for the other side, IF you want the latest and the greatest in the specs war, and an even BIGGER screen then you want the Note 3 also an awesome phone. And specswise it's no comparison, the Note3 IS better, better chip, better graphics, etc!
I really don't think you can lose either way here!