I like #51 best of your three. It is very cute!! I wold love to see it in a little more fancy font (still legible). I am looking for a balance between cute and romantic. Good job!
I think #74 has gone the opposite direction. It is a little more cutesy than I am looking for. I liked how the heart didn't fit into the o of love perfectly on #51. I really like the design of #51. It definitely catches my eye when I am looking at all the designs. I would love to see #51 done a little more fancy/elegant if possible. Thank you!