Spinnakers
Asymetrical is your best bet. Check out Cruisingdirect.com for a very good explanation of how they work and how much one will cost for your boat. Besides the sail you will need a set of blocks near the stern, a set of longer sheets, a bow fitting to rig the tack line, and, preferably, a launching sock. Most importantly you will need a spinnaker halyard, with the masthead block rigged in front ot the forestay. Two people can easily handle this sail, especially with the sock.A symetrical spinnaker requires all the above plus: a pole, a mast fitting for the pole, a foreguy (lower control line), a deck fitting for the foreguy and another halyard to be used as the pole topping lift. In addition you will need experienced or additional crew to man the traditional spinnaker. Go with the gennaker.