I have done 10 day long trips is several dedicated solo boats Souris river Tranquility, Bell Magic, Bell Rob Roy, and a Placid Boatworks RapidFire. I have spent an entire day paddling Prism and a Poke boat.  There is a lot of difference in these boats.  What I have learned is what you want in a boat will change as your tripping stile changes.  I have found that the Magic is bigger than I need.  Since I started using a magic I have lost 15Lb of fat and 20Lb of gear and my tripping stile has gone from base camper to move almost every day.  You were interested in the Prism and that is a fine solo boat and if you find that in a couple of years you want to try something else there is a good market for Prism’s.