I wanted to reply to your original question, by I want to preface by saying that I believe that good and valid arguments can be made for all of the components out there, so I hope that this does not start a contest about which is best, but just answers your question about why some of us chose the Biomet.
1. The cementless option, with both the plasma spray titanium and the hydroxyapitite coatings to encourage bone growth.
2. No heat treatment, which leaves a better carbide structure, which some argue will allow for less wear.
3. A more spherical internal geometry in the femoral component, which Biomet argues leads to better load distribution to the femoral head.
4. A non-tapered stem to avoid any loading onto the stem.
5. Dr. Gross seems to be fairly research oriented, has the experience to use any brand, and is choosing the Biomet.
Anyway, those were my reasons, and luckily they all lead to the same place.

John/ rt uncemented biomet/ Gross/ 6/16/08