Steven, Here's my link:
I did SBRT here in St. Louis and had a very good experience. The link gives the details of what it was like day to day. Like you, the "quality of life" after treatment was very important to me (as it is for all I'm sure). I did a lot of research, beyond what Cyberknife touts on it's website, and came away convinced that it was the treatment for me. I'm only one month out from treatments, but it's like nothing ever happened. No real urinary issues (I still get up to pee in the middle of the night, but that was pretty comman with me anyway), no burning or troubles with flow (I was put on the drug "Flomax" during treatments and still take them for at least the first 6 months out). I have no ED at all, and have only seen a marked decrease in semen output, which isn't that big a deal at all. Sex is as good or better than ever. There are no mountains of data with long term studies, but what they do have of 5-10 year looks great and was what pushed me forward. I think you've figured out that doctors are going to suggest what they know. My first uro was trying to get me to schedule robotic surgery at our intial consult after the biopsy, without discussing anything else in depth (he did mention "seeds" in passing, but brushed them off). This was going to be MY decision, not his, so I went to work and explored variour radiation (LDR BT, HDR BT, etc), without excluding surgery. In the end, I chose SBRT (Cyberknife, although mine was done on a different machine), because it was what I was most comfortable with. You will have to make the same decision, and it's one of the hardest parts of this journey.
I've heard and read about all the pro's and con's of the various treatment options. I decided I was fine without the full pathology report post surgery. I made my choice (and would have done LDR BT, if I had not chosen SBRT), and I'm very happy with it.
No docotr from any of the disciplines is going to give you a guarentee of anything (and if they do, run away). There's always some risk involved. For me, I felt comfortable with my radiation oncologist and my new urologist is too. I have no regrets. This was MY decision.
You can find my email through my profile, so feel free to reach out and ask me any questions you might have. I'd be happy to help. Best of luck to you. You've come to a great place!