HSA vs Traditional Health Insurance

Right now I get about $100/week taken out of my check for health and dental insurance for my wife and I. Its a $400 deductible plan and is through Blue Cross, so it is pretty good insurance. I'm 27 and do not go to the doctor often but my wife does a few times a year. So my question is would I be better off putting this money into a HSA plan and what are the pros and cons of each. FYI I already have a 401k through work and IRA fully funded each year so the HSA would just act like another retirement vehicle.