Well done on 6m39s. I'm still way over 15m. Most of my time is spent looking round the cube finding the matching edge pairs. The rest of the solve goes quite quick after that. I kind of look forward to getting parity problems. I'm determined to find a way to spot parity before it happens and avoid it. But then I'd miss out of the fun of solving it. Parity is one of the reason I prefer the 4x4 over the standard 3x3
On a modern 4x4 my pb is 3m20s - feels smooth as silk compared to the RR.
