Work out wear is very personal, but I can tell you that I have tried almost everything. Crossfit has enabled me to participate in a wide variety of fitness activities, so my workout wear has to take me from yoga, to running, to lifting, to flipping tires, and so on. I find myself in compromising positions frequently. :)
I prefer tanks unless it's in the middle of winter, but a lot of tanks out there have the little bras sewn in and/or are too short. I prefer my work out tanks to fit as long as my regular tops do. Plus, if I have to do handstands no one has to see my belly because these tanks stays put. :) I am generally not a fan of spending a lot on fitness wear, and I do think it's silly to buy a label for the sake of buying a label, but I can't deny that these cool racerback tanks by Lululemon are the bees knees.
Lululemon, Capris: Under Armor "Touch", Bra: Nike, Shoes: Asics, Headband, Under Armor