Priv might Be a good choice
First I have to say I am not a very loyal Bb fan. I only start using bb z10 around one and half year ago. The reason to choose z10 is simple. My old Android phone does not work well and my friend used to work in bb and get can me z10 with employee price.
My feeling for z10 is quite mixed. I hate its battery and app issue. Even it can run Android apps. It is not that smooth. But I like the hub a lot. It make me feel it is a phone, a communication tool. I do not think i can go back to another platform without a hub.
Hopefully priv can solve this issue. As i know it for sure can use Android apps smoothly and have bb hub. So if the battery is good and the price is right, i might buy one to replace my z10.