A reader named KC recently wrote in with a question about investing for retirement:

I’m 28 years old with a wife and a six month old baby. We’ve always been money-conscious, but would really like to focus our efforts. We both have Roth IRAs, but are not satisfied with them. They are heavily loaded, and we weren’t that familiar with them when we were advised to set them up. My question is where you would recommend I go for a long-term investing vehicle? I always hear to go with no-load mutual funds but would like your opinion.