I have a carafino..great fun...very very different. If I had to choose between the foil and raceboard I would probably go raceboard still...but lucky for me I did not have to choose.
I have a beautiful layup carbon board.
I find it hard to compare the two, though, but for ultra light wind foils are super good... The Carafino has two different foils, I have the low aspect which isw super easy to go on...i was upwind in my first session. Riding comfortably after three. I did try old style boots and metal foil...the one Laird is using earlier and it was horrible.