The C is a better boat to sail
I currently own a 26c or s that is for sale. I think the 26c is a great boat. I am selling mine, but I still love it. You can trail it and it does fly in the water. I have sailed this one on lake erie a lot and have not see anything stay up with it. The 26x has more cabin room, but it does not sail as well. Every boat is a compromise, but the 26c's has few. The fact that it is water ballast and that makes it very trailerable, but it also means you need to reef the sails a little earlier than a heavy keel boat. Also, the 26c is such a bargain compared to the price of a 26x.