Medical Savings Plans

Anybody have any experience with Medical Savings Plans ? I'm going to have to seriously look at these. Health Insurance Premiums for someone on their own are becoming more outrageous every year. Mine have gone up 15-20% every year and that just isn't going to cut it, boys and girls. So if you've gone down the road of Medical Savings Plans, post a comment here and let me know of the possible pitfalls or your experiences.