I think frequently when we ask for someone's opinion we are just seeking affirmation. As you and other commenters have already recognized, opinions are based on your own tastes so everyones will differ. My opinion is that you should go with the flower applique.
Here is a link to a recently posted shower curtain done in raw edge roses and it is gorgeous (just my opinion).
http://www.quiltingboard.com/t-90920-1.htm