I was expecting to get a replacement Aortic Root, a Dacron graft, added to my porky-pig Hancock II AV. When they examined my AR, they decided it was only very slightly distended, and that the tissue looked good, so they just took a "tuck" to make it totally normal size (presumably a snug fit to the 2.7mm AVR I got), so I got stitched up without the AR graft.
I was never told that the need for an AR graft had any bearing on my preference for one general kind of valve over another, e.g., mechanical vs. tissue. I've since learned that there are a number of tissue valves that come with tissue Ascending Aortas still attached (e.g., from the pig). Many of the so-called "stentless" valves work that way, I believe. They often have the best hemodynamics (more important if your Aorta and AV are small), and are considered trickier to install properly by many CV surgeons.
(I was happy to make my surgeon uncomfortable with challenging patient-from-Hell questions, but when it came down to his choice of tools and techniques and valves and such, I decided I wanted him in the middle of his Comfort Zone.)
I thought that some of the MVs also came with AR sleeves pre-attached, but I may be remembering wrong.