Hi Michael,
Welcome! It's amazing how you can chat with friends across the world on one of these sites!
I just had my aortic valve replaced. My mother works in a pharmacy and has seen horrible things happen to people on thinners. So I knew I would have a tissue valve and I wouldn't let anyone tell me otherwise.
Skip forward a couple of months to the night before my surgery. I had just had a pre-op cardiac MRI. My surgeon looked at it, and called me from home to say that I REALLY ought to reconsider my choice. When I talked about the technical advances of the future, he said I should consider that my age (30's) is a reason to look the 15-20 year tissue valve lifespan in the face and realize that if it would last less time for anyone, I might be the one. Also, the nature of my aneurysm was going to make some scarring that could complicate a future surgery (but I don't think you have that.)
If I was married to an easy-going type, I might have still gone tissue. My husband was a basket case before the surgery.
So was my mom. She works at a hospital in inner city Baltimore. And it turned out the horror stories she told me about warfarin involved street people -- people who don't eat regularly or have a place to sleep, who are addicted to , don't know what time it is or see their doctors regularly.
I have been on thinners for a month now. I can honestly say that it's been similar to taking a daily vitamin except that now, someone checks to make sure my "vitamin" is working.
I don't think in this day and age you can make a bad choice if you're fully informed before you make it. All the tissue valvers on this site seem happy. Even though I chose a mechanical valve, I'm happy too.