Business Bank Account – Which one is good?

I want to open a business bank account.

Google suggests that Kontist is one of the best as it makes invoice preparation and tax filing easier. I run a newsletter and will receive ad sponsors around the world.

I need your opinion:

1. Is the 10 EURO premium account enough for a freelancer?
2. How good is their invoice generation and other tax filing document support? I plan to use it with getsorted.de for tax filing.
3. Does Kontist allow opening a joint account as a freelancer? So my partner and I do freelancing together.
4. What are the main problems and risks of using Kontist?
5. What business bank account would you suggest?