So before moving up to 400 NL, I bought a pattern mapper off of caterp. I've been really careful with table selection and with the pattern mapper, I've been playing almost perfectly.
Check out my lifetime graph:
http://img380.imageshack.us/my.php?image=400nlon9.jpg
If anyone is interested, I think he is selling them for $1k a pop on FT, but it is WELL worth it. Shoot him a PM if you want to win like this.