As a relatively new quilter, I've pieced only two lap size quilts, the rest have been small wall hangings. I like the wall hanging size because I can find the concentration to sandwhich, quilt and bind.
I try not to start too many new projects when I have lots of unfinished ones because it makes me feel tense like I have too much piling up.
I'd really like to try my first full sized quilt, but I find it a little daunting! I'm thinking after Christmas I'll give it a try.