hi, if you are compairing the f16 to the a class, i think the a class is a bit lighter, and more simple with only one sail but if you are mainly sailing in light winds, it may be better for you to get a f16 as they are faster on yardstick texel/portsmouth even 2 up so 1 up they should steam away from the a class, i sail my f18 single handed with the spinnaker flying in light airs, its gr8 fun as long as you have 3 arms, the spitfires and the blades look the best f16 and the spitfires do very well racing in the uk, the f18's find it hard to shake them off untill the wind picks up where as if i am racing against an a-class you can pull away when you raise the spinny, blades sail with a single sail single handed (and i am sure the spitfire is the same, somone on here will know for sure), but you could go with all sails up in light winds

have you seen the roller reefing spinnakers? for single handed cats that is the way forward