Wow. What a choice. Two top surgeons. I don't know either one except by reputation so I have to give generic rather than specific advice. I agree with Tamu and Bluebird. Keep both appointments.
I am assuming that both are top surgeons with similar outcomes in terms of removing the cancer, urinary control, and return of sexual function. Given that, here are few things to look for and compare:
1: Bedside manner. Some surgeons are not the most people friendly. Usually you accept this to get a top surgeon but in your case, when comparing two top surgeons, go for the one that spends time talking to you.
2: Management of side effects especially "penile rehabilitation." Some surgeons do the operation and then feel like their job is done. Others have a complete program of dealing with side effects (particularly a penile rehabilition program such as medications, pumps, whatever.)
3: Operating schedule backlog. If you are unwilling to wait very long and one surgeon has a big backlog, that may drive your decision.
4: Insurance. Make sure both doctors and both hospitals are covered in network on your insurance. My hospital was but my doctor wasn't (actually he just required that we pay him in full and then seek reimbursement from our insurance company) which cost us about
$3,000 more than it would have otherwise. We didn't care because we wanted him but all things being equal, you probably do.
5: Distance: Is one located close enough to you to use him in the future as you regular urologist? Is one or both willing to do this if they are close enough? My surgeon is too far away so I have both a surgeon and a local urologist and they aren't always on the same page.
DIAGNOSIS: 09/25/06. Age 49. PSA 4.6. PSA free 2%. Clinical pathology: Gleason 10. Stage T2a.
SURGERY: 11/08/06. RP at Johns Hopkins. Surgical pathology Gleason 10. Stage T3a (positive margins.) Negative seminal vesicles, lymph nodes, and bone scan.