i've had a few tangs in my time... and i LOVE them ALL!!
i voted for PowderBlue though...
she is awesome... here's her story...
had wanted one forever... finally felt my tank was ready for one...(had a purple tang at the time already)
she was in a tank with about 20 yellow tangs
was looking a touch too thin for my liking, but she was alert and had a good appetite at the LFS so i took her home...
intoduced her to the tank, she didnt flinch for a second, no dashing no darting no hiding... the purple didnt chase her at all. she had claimed her spot as QUEEN!!
she put on weight in no time and has been lookin beautiful ever since.
she did break her back once while getting caught in a fishtrap, which scared the crap outta me, as i saw her awkardly swim away with a really bad bent spine. but it corrected itself in a few hours! to my relief!