Well, I buy for my self 10 or 15 years with TAVR and who knows...Why do OHS and risk not to wake up from surgery. Who knows what will be with the world in 10 or 15 years.. Don't think that much long. Live day by day.
TAVR is non invasion one hour procedure. Why not for 7000E?
Of course this is 100% your choice, but the why not is because most likely the planet will still be spinning in 10-15 years.
A bioprosthetic CAN last 20 years, but that doesn't mean it will. I have read stories from people where they failed in three. You MAY, at your age, get 10 years. Let's use that number, although it could be less. That puts you at 56 years old. So, let's say they can do valve in valve at that time, with TAVR again. That would put you at 66 in another 10 years. So, at that point Open-Heart surgery becomes far more dangerous, but it is most likely what you will require. It will be more risky due to your age, and then add in the risk factor of having undergone TAVR twice, and risk is multiplied. TAVR is minimally invasive, but that doesn't mean it doesn't cause scarring, etc inside your body. All that said, as Pellicle stated, you may very well have to get Open-Heart surgery for the second operation and while still young, you will be older and so the recovery will likely be a bit harder.
My husband went through this same decision making process as he is only 51 and just had his valve replaced two weeks ago. He chose mechanical because it is, more than likely, a one-and-done scenario. He can just enjoy the rest of his life without having to go through this ever again. He was unsure about Warfarin management, but reading this forum made him feel confident it wouldn't be a big deal. He already takes daily medication, what's one more.
After he gets through the learning stage he will move to home monitoring or his inr which makes Warfarin management even easier, as you can tweak your own dosage as needed for quick adjustments.
Anyway, as I said, this is 100% your decision and you have to make the best decision you can for yourself. If all you are worried about is making it easy right now, then I guess a bioprosthetic is fine. If you would like to make your life easier for the next 40 years though, a mechanical is the way to go.