So I have stopped using a planner for homeschool a LONG, LONG time ago and now I simply use a 5x8 notebook that has a a really cool cover that I got for a buck at Wallyworld. It's been working out great but....if I was being sucked into planning mode again....er...I mean choosing a new system I think I would go with this one!
Simply Planned Homeschool Planner
it even has a user video...I'm such a sucker for videos! She has even better ones of the planner on her blog!