Jerry,
I work with Navionics and strongly suggest the Premium South for what you're talking about. The HD lakes listed were surveyed and are acutal readings. Most map programs available either in SD, factory loaded, or paper are developed through various sources such as Corp. maps, existing lake maps, and satalite imaging. The 09 versions have added several new HD lakes such as Arkansas River, Chicot, Greeson, Maumelle, and Nimrod in Arkansas however, no new additions in Missouri. If you'd like to try out a Premium or a Platinum give me a email and I'll loan you one to play with.
Also the $100 rebate is still good. Stop by BPS and pick one up or I can send you one.
J.E.
Eric,
Same offer to you!