While I'm still not sure that a 529 plan is right for me, it is a good plan for a lot of people. One of the most difficult parts of it is trying to figure out the best plans. Savingforcollege has a ranking system for all the 529 plans giving them 1 (lowest) to 5 (highest) caps. This might be a good place to begin your research of 529 plans.
In other 529 plan news, many people were wary of them because the federal tax deduction was set to expire in 2010 and while most people felt that it would be renewed, there was always a chance that it wouldn't be. This is no longer a worry as the Pension Protection Act of 2006 makes the tax benefits for 529 plans permanent.