I've not used it for DG but my daughters are big into cross country, track, and soccer. We won't buy anything but UA for them. Nothing else stands up to the repeated washing and we've never had a bit of odor problem. And we've never had a complaint about itching. I understand the reaction to a $50 undershirt but from our experience it's worth the money.
But I have some Gander Mtn similar stuff that seems to be working for me but I don't use it as much as my daughters.
** Thread Jack warning ** I'd like to hear if anyone has suggestions for gloves. There's all kinds of liner and sports gloves - any of them work?