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I've switched out to no-name made in China ceramic Hollowtech II bb's on my mountain bike and it is smooooth, and going on quite strong. And under $50 to boot
Is your bb30 bearings that press directly into the frame? Or is it a thread on bb cup? I'm not too well versed in all the road bike standards, but I thought bb30 only presses directly into the frame. If it presses in, its worthwhile to have your shop check that the bb shell is perfectly round. I've heard of shells being out of spec by just a little bit, and when the round bearings get pressed in it can get deformed just enough to cause premature bearing wear.
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