Gents - I'm looking for undershirts that don't show through too much when wearing a white dress shirt, and aren't ridiculously expensive. It seems to me like I probably want v-neck tees for underarm coverage without the shirt showing through when I wear my dress shirt unbuttoned and without a tie, which is often. I have heard that gray actually shows through less than white (true?). It seems like from Hanes to Nordstrom's to Saks brands you either get white or black, or maybe a pack of assorted colors, but never a pack of gray. Any suggestions? Is it false that heather gray shirts are actually better at not showing through? Thanks in advance.