In our opinion, this is the one to buy. Why? Because once you open the box of all of these, they seem to be the exact same thing in different colors. This one is less expensive. So it is a better value. We suggest this one.
Romp also makes cute toys and they likely had some say in how this toy looks. With its hot-pink and yellow vibe, it's a looker. Bnderneath it is the same toy for a little more money. Not our pick.
This model of The Rose seems to have its price most out-of-line with the toy. This is likely because the author of Fifty Shades of Grey is getting a cut of every vibrator sold. This is an officially licensed product. Not our pick.