Many of the designs are avaliable in both size at no extra cost from some.
I agree the Embroidery Library has thousands of designs to choose from but be sure to buy a couple and test sew them first, Their designs are known to be very dense and I have actually broken needles sewing them out and then the design was to dense for most clothing. I found when I bought some different designs of the same subject from them that one sewed out just fine but other two were so dense I never used them again. Get designer's free test sew designs and sew them out save test sews to make a charity quilt. You will soon learn who the good digitizers are. Also using proper stabelizer is important to the sew out.