I am going to have a AVR done in the near future along with triple bypass surgery. I have already met with the surgeon and have completed the pre-op and am currently waiting for the call to set the date for my surgery. I have discussed the desire for a tissue valve vs a mechanical one with my surgeon and decided I wish to go forward with the tissue valve. My surgeon gave me the feeling that she was leaning more in favor of a mechanical valve rather than a tissue one although she indicated either was a good choice and suggested that if I was leaning towards a tissue valve that she recommended the Carpenter Edwards Perimount Pericardial tissue valve. I was in agreement with this choice as it was the one I was looking at too and had done what research I could on line and judged it was the best for me. I should state here that I am 64 years old and my heart itself is good . I knew I had a bad aortic valve since I was about 18 years old and have always had a heart murmur due to this . I have genetically high cholesterol and the valve and cholesterol progressively got worse over the years even with aggressive cholesterol therapy to the point where I am at today. During my research on valves I see that Carpenter Edwards indicate on their website that they have 7 different models of aortic valves. Does anybody out there know what the difference is between these models ? Are they like a car and one is better than the next ? Does anybody know what the Cadillac model would be ?