Andrew:
Quantity is good, but only if it is accompanied by quality. Some additional ways of comparing surgeons:
1. What implants do they use (i.e. Biomet, BHR, Cormet, etc)?
2. Does the surgeon use a cemented or cementless femoral cap?
3. What acetabular cup angle does the surgeon aim for? How successful is the surgeon in getting that angle?
4. What is his/her infection rate?
5. What is his/her revision rate?
6. Which approach does the surgeon use (i.e. antero lateral, posterior, etc)
7. If the surgeon detaches the gluteus maximus tendon, does he/she reattach it?
8. How receptive is the surgeon's staff, and the surgeon, to questions before the surgery? If they don't return phone calls or answer your questions straight up, then don't assume they will operate any better after your surgery.
9. You can read patient stories on surface hippy and the yahoo surface hippy site. The patient stories talk about specific doctors and experiences.
10. There is currently an interesting debate on yahoo concerning cemented vs. cementless implants. You may want to take a look at it. There have been similar debates in the past that are interesting to read. Some things don't change.
Good luck.
Mac