As already mentioned Black & Purple NK, Green Fly have been producing 20lb+ for me also...
Still need the secret sauce for 30lb + this year (and no, I don't know what the secret sauce is, yet, but I am sure as always with any fishing, persistence and patience are in there somewhere as the main ingredients!).
The 38x22" would be just shy of 24lbs according to the estimator here:
http://www.piscatorialpursuits.com/reso ... ulator.htm
...Fish on!