I agree that it's hard to choose sometimes. If they are on sale sometimes I just get all the sizes that fit my machine. If the design is more expensive then I will choose the one I think I'll use the most. If you quilt or sew for children go to: www.bunnycup.com for about sixty FREE SETS of embroidery designs. The designs stitch out really well and if you get on the mailing list you will receive special emails and sales flyers.