Hi. I'm Matt, and I solve 3x3 and 4x4. As of now, I don't have a 3x3, but I have a YJ GuanLong coming via my friend Julian, who I call the shower algorithmist. I have created a 3x3 method, and am currently working on a 4x4 method. I average 42 seconds in 3x3, and around 2 minutes, 4 seconds in 4x4. Not terribly fast, but I'm no expert either. My edge pairing is downright awful.