I have never used any pre-cuts. I'm probably the exception as many do use them. I can see the advantage of getting a variety of fabrics with them. I just enjoy the whole process of quilting so cutting my own doesn't seem like a chore and many of the things that I make don't use standard sizes that come in pre-cuts. Over time I have accumulated a stash and I never throw any scraps away so if I need a color here or there I generally have it. Whether you use pre-cuts or not really depends on so many things. One way is not any better than the other.