The tape reading section was rather short but I found it very interesting that Linda Raschke prefers to use Level I quotes. The reasons she gave for not using depth of market included iceberg orders, spoofing and high frequency algo scalping.
She mentioned in another video that featured her workstation with ten monitors that she spends 99% of the trading day just looking at a 'little tiny box' with quotes. It was great to see what that 'little tiny box' consist of.