Well for me there is just not enough reason for me to jump from a z10 to z30. The main advantage I see people talk about is the battery life which the z10 is not the most efficient at (depends on usage) but for me if I want more battery life buying a battery bundle would be a better choice because I wouldn't want to buy another phone just for more battery. I don't need more screen size and from the specs the z10 has a better screen resolution. I'm also with at&t and I wouldn't even get LTE in my city with it so that makes it an official no go.
I have to say that I am satisfied with my z10 battery life issues and all. It gets me through a work day with no problem and I get about an average of 10 hours with moderate use and like 8 hours heave use. I've gotten up to like 14 hours before. No need to go higher than that because by that time I will be ready for bed and a recharge.
I'm not knocking the z30 I'm sure its an excellent phone that has its perks but I'm good with the z10. Can't wait to see what blackberry has next up their sleeve though :)
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