I just bought a Tier 2 deal. Every day, I used Screaming Frog, Sitebulb, and Website Audience. It appears to be very similar to Screaming Frog, though the interface gives me an old-school feel. It could be my opinion, but it doesn't matter. The main point is how accurate it is and how many factors we can test. I was aware of this tool but had never used it. Let's see how things go.