I like Jelly Rolls because generally they are all from the same line of fabric and play nicely together. Once in a while a blooper is added but not more than one and not in every roll. I watch for good quality jelly rolls on sale, online. Often but not always MSQ. When I count my time for shopping for colors that blend well, pressing, cutting, recalculating patterns for yardage cut strips. I don't think I am losing much on the purchase of an on-sale jelly roll.