I do already own the mono cles, however, I feel like I need to own a key holder. It's just so darn cute. So the question is which one? They're all so eye catching, but I want one that I can rely on without the wear-n-tear since it will be used on a daily basis. I have four keys for home, and another four keys for car, work and other. Currently they're separated by two different keychains. Please provide comments on pros and cons...Thanks!