Hopefully neither model is offended by my saying this...
Both Rose and Ruby are used in a lot of model names, which can be both a good and bad thing depending on what you're trying to do. Ever wonder why some models have names like Facebook and Skype? I didn't get it until someone explained that it helps avoid their content being found, it makes them heard to search for, which is a good thing if that's what you want!
Branding is also important to a lot of models though, so if your goal is to stand out and be easily found in searches, it's better to pick a unique name.