Disc-Co

Hi guys, here's my latest matchvid FT5 vs Hakumen http://www.youtube.com/watch?v=cshBWOdOMk4 Casuals vs Rachel http://www.youtube.com/watch?v=8cOLDt7Jq6A Personally I'm still having a hard time dealing with Hakumen, especially in neutral play since most of his moves beats me completely. Any comment/advice will be appreciated.

So I've been wandering since I saw many videos using tk.623B, what is the difference with the normal 623B? Faster recovery?