thanks my friends for your replys.
I have compared the two, and seems like you say, that the octava is much smoother for vocals but I prefer the ADK for acoustic instrument especially for 12 string-guitarr. Crispy nice sound there.
So what to do now?
Go to mum and dad and ask for a christmas present in advance, so I can keep them both, I guess.
I really would like to keep them.
Lars.