Sorry for my late response. My husband was only 44 when diagnosed. His PSA was 3.74 and he opted for Brachytherapy because the location of the tumour posed problems - namely if they cut too wide, he'd be left incontinent, if they cut moderately, they could split the tumour and leave some in. He did not like the options so he went with Brachytherapy which is yielding the same results as surgery at this point.
We used Toronto's Princess Margaret Hospital - WONDERFUL experience there. I have to mention that my husband has had NONE of the serious side effects mentioned - no urinary blockage, no erectile disfunction, no bowel issues (other than some inflamed hemmoroids) and no loss of appetite or irritable food issues so maybe we were lucky, maybe we were blessed with a great surgeon, I don't know, I'm just thankful.
If you need to know anything else, just holler, I'm happy to help. Every doctor we saw thought their procedure was best. What it boils down to is do what YOU feel most comfortable with and don't look back - best wishes to you.