I was not in section 3 (Curriculum B), but I know people who were. I wouldn't worry about missing out on your education. They still learned all the importaint concepts. My Property prof usually teaches curriculum B and didn't change the class much for us, so I got a taste. The only thing that was really different was that he substituted a bunch of law and economics stuff for the rule against perpituities. I hear most people hate learning the rule against perpituities, so I suppose it worked out well.
Overall, section 3 people tend to be more public-interest oriented and less likely to want to do biglaw. They also tend to have a sense of community that can sometimes be lacking in other sections. I would caution that you may find the curve more difficult in the section, because it is made up of people who have voluntarily signed on for extra work (not sure if it actually is extra work, but it is advertised as such).