Another pro frac rig
Masthead rigs, I have read, were developed to comply with IOR racing rules from times past. On a masthead rig boat, the genny is the power sail. An a frac rig, the mast is usually a little more forward, the mainsail bigger, and the main is the driving sail.Personally, I like the frac rig for the some reason Jon said -- much easier to handle. I worry a lot less about getting hit by a squall, I can roller furl the headsail and its not very big. The main is bigger, true, but ismore controllable, and you can reef it down without affecting sail characteristics. You cannot reef in the headsail with roller furler much without your headsail becoming a bag that is not much help going to weather. Big headsail = big bag.I've sailed on boats with big gennys, and they are (relatively) a pain in the ass to handle, and if you get caught in a squall, the force on the big forsail can make them pretty tough to get in.