I am in the market for my 1st X-Metal but not sure which style to choose. I haven't been able to try any of them on. The O frames I wear most are Fives Squared, Jawbone, Flak Jacket XLJ, and Straight Jacket II. I owned some Crankcases but found they touched my eyebrows and were uncomfortable on the side of my head after 30 mins. Here are some x-metals I am considering: I found 2 Juliets; 1 is complete BNIB with black iridium lenses and x-metal frame. The other has plasma iridium lenses and titanium frame but only comes with a metal vault, no box or coin. He did not say how many times it was worn. The XX I found is complete, with very little use, and has 24k iridium lenses and 24k frame. The Penny was worn 4 times and has ruby lenses and titanium frame. I am also considering a polished Half-X on here with VR50 lenses. I appreciate any input into which ones are the best investment and also if there are others you would choose if you could only own 1 x-metal. Thank you.