Have 6.5-7 mm opera strands ever felt too small for anyone, even when they're doubled up? As a side note, how noticeable are the asymmetries in Pearl Paradise's AA+ strands? I can't justify paying for freshadama, but I am curious if people can tell the difference right away between AA+ and AAA. If you had to choose, would you rather upgrade the quality from AA+ to AAA or go up in pearl size?