the penny is actually my most worn pair. they are the most comfortable but there is a large gap below the lens with them. Second is R2. they are just a very good shape overall for my face. third fit wise is half-x, however they sit to close and my eyelashes rub the lenses, so they are not usable long term. then Juliets, they are just barely usable and fit well enough. No other X -metal fits my face enough to be a daily pair. I may be able to find some large X squared nose bombs and put them on upside down and use X Squared, at some point i will try that out.