Thanks for your comments Screamer. Fully agree that the handling and gybe of a slalom board are so much better and more exciting than formula.
If I go for the slalom boards (which I will most likely do), do you think the 133l is big enough for me or would I benefit going with the 144l? I have not seen many people using the 144l so I assume the 133l is big enough since even the heavy sailors are using it. Can anyone comment what the main advantages/disadvantages of those 2 boards for someone of my size would be?