Welcome to HW - as always, we hate to see new members come through the portal, but we are all here to help where we can.
Check the lab that did your biopsy report. If you have not yet done so, get a copy of the report. At least in my case, it turned out I was with Bostwick, but did not know that until someone suggested I ask for the copy. I did not find HW until long after my DaVinci surgery.
You might also check at the top of the forum - there is a list of suggestions (posted by English Alf from contributions by many members) that cover all sorts of things that you will want to ask about, and a lot of good pre-surgery preparations ranging from what you can expect to tips on dealing with a catheter. There are also a number of threads on preparation and other useful sites, but you will have to search a bit.
I'd have to look up the book, but one by a urologist who is also a surgery patient reminds us that what is best for completely curing the cancer may not be what is best for the patient and his quality of life. My uro had less than the magic number (whatever you choose - 1000, 2000) DaVincis, but has been doing open surgery for almost 20 years. He also said that in my case, based on the location and Gleason, that nerve-sparing was not the best approach, as the tumors found via biopsy were dangerously close to the areas that the nerves would cross. Even with a wide margin (beyond the area that the nerves would be in) and extra work, I still had positive margins.
There is no definitive answer for you, as you will have seen in talking to different specialists - all love their treatment. Just be sure the one you choose satisfies your questions and confidence levels.