Hello again, I've been looking at the XMetal exchange forums and I'm quite interested in a few pieces. I've worn Oakleys for the past 13 years, but I've never had an XMetal before, so I wanted to see what you XMetal experts suggest as a good "start with" model. I'm currently looking at a Juliet, a Penny, XX and I'm tempted by a Romeo 2 So out of the ones I listed which one would you suggest as a good and easy to mantain model? Any recomendation or comment is greatly appreciated. Thanks! Ps. What's a tune up?