Hi Bagpus,
I think positive thinking will help you a lot.
Firstly research shows that by the time we hit 60 most men have PCa (prostate cancer), some know it but most do not, indeed many men will live full and rewarding lives and die in their 80's and 90's of something unrelated without ever realising that they had PCa.
Your Gleason score is a good one to have, my consultant told me that men with G9 and G10 are likely to die of PCa whatever their doctors do, men with G5 and G6 will live long enough to die of something else, it is the G7's and 8's that are the challenge, they are the cases where good doctors make most difference.
With your G6, T2b, diagnosis you have pretty much all of the treatment options available to you, and plenty of time to make up your mind. So my advice is to take as much time as you need to weigh up the pro's and con's of all treatment options and decide which is right for you.
In your deliberations you might want to give some consideration to the non-treatment options, variously called Active Monitoring or Watchful Weighting, recent statistics suggest that your life expectancy isn't diminished by doing nothing. I know men who have rushed into radical treatment, in the belief that it is best to cut the cancer out, who have been left impotent, incontinent as a result, and have all the time in the world to wonder if they did the right thing.
Positive thinking is important, my diagnosis was rather worse than yours (G9T3), but I am still here nearly 10 years later, and what a wonderful ten years they have been, I spent some wonderful days last summer, splashing in the surf and making sandcastles on the beach with my grandchildren, who weren't anything but a twinkle in their father's eye when I was diagnosed.
So you really can look forward to doing the same in 10, 15 maybe 20 years time, irrespective of whatever treatment option you choose.
Always remember the maxim 'I've got cancer, but cancer hasn't got me'.
:)
Dave