thanks for prompt reply.
I'll be sailing only on inland lakes.
So far I have only FType 158 and tried smaller board (120 l freeride F2) for a few sessions and had no problem to get planning.
I'm not a speed freak so I'm looking for a board which will give me comfortable ride at high(er) winds. Since I don't have any experience on Carve, S-Type or ISonic I heavily rely on your experienced advice.