[tristor]

I did the same thing, also with undershirts and socks. There is a quality difference in some brands, and others are overpriced junk. You pretty much need to sample test to find out which is which. I paid $80 for an undershirt, and $40 for a pair of underwear, and $15 for a pair of socks, but all of them have been heavily abused and washed for years and are still in fantastic shape and super-comfortable. There were more expensive and cheaper options available that were worse, however, some worse than Walmart brands, for too much money.

I wish there were some truth in advertising to consumers, but caveat emptor is the the rule of the day. All you can do is get one of each, pick what actually works, and invest in your comfort.