I'm just slightly ahead of you in the process so can clearly identify with your current feelings and anxieties.
First of all, in my opinion you are doing the right thing by consulting several docs. I did the same thing and felt better about my decision because of it. I see you are leaning toward the seeds...that is the decision I have made also but I think most men in this forum have opted for surgery. It's an individual choice, of course, and all of the research I did showed similar cure rates. Then it becomes a matter of evaluating the side effects plus how much you psychologically want to "have it out". That's a big deal with many patients...not so much with me.
There is a lot of reading I could recommend, but three particular things come to mind:
1. JustJulie's thread on this forum shares her and her husband's brachytherapy experiences. I found her comments very helpful as were the comments of others on the thread.
2. There was an excellent article in the New England Journal of Medicine, March 20, 2008, entitled "Quality of LIfe and Satisfaction with Outcome among Prostate-Cancer Survivors". This provides up to date data comparing different treatments and I found this very useful.
3. I posted a recent topic that I called "Experience Counts". It cites info from Hopkins re the need to use experienced surgeons if you want the best outcome. I'm sure this is true for radiation practitioners as well. The guy who is doing my seeding has well over 500 procedures under his belt (so to speak) and I spoke to a number of his patients who were very pleased with him as a doc. I think this experience thing is especially true when it comes to robotic as there are tons of urologists who are now "learning" it. This was my second option and the surgeon I had chosen had 1000+ procdures.
Anyway, good luck in your decision making and please come back here and tell us what you decide.