My local BM store is far more knowledgeable when I have questions. My local SW is mostly staffed by young 20 somethings who can mix paint, but who aren't particularly helpful beyond standard questions. I am sure this is very much a YMMV situation, but our BM store is so, so helpful.

We have used a lot of BM and some SW in the past. A lot of my current house is painted in BM's Aura line.