Not sure where your love affair with PFM stems from. The only time I've seen them is when people have had problems and the PFM rep becomes abusive. Their statement on balancing is incorrect, you will not damage a pack by balance charging. It's a lame way for them to try and convince the public that their packs are better because they match cells. I'm not saying matching cells is a bad thing but balance charging is better for saftey.
You should never discharge your lipo's to zero so their statement of mid point balancing is pointless