Well, your brother was probably right, even with the hit last year you would have had a lot more money in that account then $28K because with college so close you would have moved that money into very conservative accounts and you would not have had much of a hit at all.
Prepaid plans are money makers for the college systems. They get all the profits and if your child ends up not going to a state university, you are out the money.
If you want to have a "college savings account" 529 plan is the way to go. I still think there are better options with less restrictions and the same tax advantages.