Originally Posted by Roger
I cannot fully answer your question as I have not sailed the largest Futura yet.
My guess would be that the FF 138 and F-Type 138 (which I have sailed extensively but no longer have to make a direct comparison) will get on plane a little earlier due to the difference in width.
The FF/FT 138's are 96 cm wide.
The Futura 155 is 85 cm wide.
I have sailed the Futura 133 and from that experience, I would expect the Futura 155 to be a better jiber and handle chop better than the FF/FT 138's.
So, I suspect you are correct, and I will give you an update as soon as I sail the Futura 155 (it just came out of the repair shop yesterday due to some minor damage inficted by the board tests earlier this year.)
Hope this helps,
Thanks Roger, I look forward to your update.