I just had a new article on the draw backs of 529 Plans published at Crains Wealth website: http://www.crainswealth.com/article/20150603/WEALTH/150609965/money-milestones-downsides-of-a-529-college-savings-plan
While 529 Plans do offer some tax advantages, they do come with restrictions. For some families a portfolio of good old fashioned high quality stocks might offer a better alternative.