We have stayed at both the YC and the Boardwalk. Loved them both for different reasons.
When we were at the Boardwalk we were actually with a convention group and we weren't the only convention there. The hotel was very peaceful, more of a melancholy feel to it. The quiet pool was great because we were the only ones using it for the first 2 days of the convention. We were given 1/2 day passes to the parks which were very nice because about the time we were going the crowds were leaving. In the mornings I would get up, go for a walk all the way around the Boardwalk and stop off at the Bakery to get some breakfast for the kids and I (it was so peaceful and calming). There was plenty of shopping right in that area, tons of food choices and plenty of entertainment. The staff was friendly and as far as the convention peoples they were so caught up in the convention activities that they could have cared less what we were doing (they were never rude or anything just preoccupied).
At the YC we had the exact opposite experience. We never noticed any convention types, there were always people around, the pool was always busy and everyone seemed to be in a hurry. All of this was perfectly fine with us because we were in the same mode, VACATION. Again we loved this resort! The hotel itself is beautiful and has a very inviting decor. The pool is amazing and we personally think it is the best of all the Disney pools we have seen! In the evenings we would go over to the Boardwalk and rent a bike to drive around which made us feel like we were right in the middle of the fun! The shopping and food were equal since we used the same place but this location has the advantage of being that much closer to Beaches and Cream (our families favorite). Again the staff was great and the vacation crowd seemed a little less friendly than the convention crowd (they were probably exhausted from all of the fun).
So I guess what I am saying is honestly I don't think you can go wrong with either resort. It is always good to try new things (change is good). If you find one you don't like, try another and it my fit you better. Personally I don't think at Disney there is a single resort you wouldn't like (what's not to like) but maybe one may be a better fit for you than another.