I have the Smartwool Phd seamless sports bra - it rides pretty high, but it's nice and supportive. Because it's double layer, it takes longer to dry than most merino stuff. Runs true to size.
I also have the Icebreaker Sprite bra, which runs a bit large and isn't really supportive enough for running. Nice for cycling, xc ski, hiking, whatever else though. I have the matching hot pants as well, but they annoy me a bit since the waistband is much tighter than the rest of the cut warrants.
I do have a pair of Ibex's Balance boy shorts (I'm actually wearing them right now - keeps my bum warm in the cold car on the way to work and I'll wear them under running pants when I get home) and the material is wonderful. I wouldn't hesitate to buy their Balance bra based on them.
Cheers!
-mistress k
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ill advised racing inc.