Okay I have been wavering between tissue and mechanical, but I believe the best option for me is the mechanical route. Every one here as convinced me Coumadin is not a big deal and my cardiologist tells me mechanical is the way. So my question is what is the best mechanical valve? Pros/cons? I would like to have some options to discuss with my surgeon/cardiologist in 2 weeks and do some research on as well. Thank you for all your help.