I sailed on one for half of the FWB round the island in 2006. Dissappointing because the wind just wasn't there (hence "half" of the RTI). Very nice boat, wish I had been on it when there was more wind though. Not much, if anything, for cruising with very minimal interior. I can't say much about the F31 yet but I will be cruising that more than racing it- by far.
I agree about the cruising statement above but you could overnight it with some cushions inside and it has the largest **** of any Corsair (including the 31) which is really nice for daysailing.