If you are planing on sailing alone, I would choose an A Cat, I made the conversion a few years ago and cannot imagine ever wanting to sail anything else again. If you are alone there is a big difference in handling 75kg or 140kg, the rest of the specs are similar, the A is a foot longer, 20 cm narrower and has only one sail, but there are options for an asymetric if you want one. An fx would not stand a chance around the cans. I will be receiving on of these in 4 weeks.
http://www.messmer-seiler.ch/scheurer/regards
Daniel
