In a discussion of grind spots on one of the forums, someone linked this chart of the blue garder forum. Granted it's 1.17, but I believe almost everything still applies (and will probably continue to in the future). Needless to say, much of what we've been grinding on since the beginning supports these theories, but if you haven't seen this chart/thread, you should.

http://www.bluegartr.com/threads/104903-Combat-SP-quot-Base-SP-quot-Chart

ty for taking the time to do the research.