@heavyphil
"I have always found Dr Kwon’s approach unsettling. If standard SRT to the bed and nodes is to be frowned upon, why then do so many men - including myself - see a dramatic DROP in PSA levels after treatment?"

That is exactly what I told my husband the other day. So many studies show high advantage of having sRT and not only having it but with exact cut off number for great success (before PSA 0.5, and the BEST before 0.25 ) - so in what way waiting can be beneficial ?

If one listens carefully to presentation there is one place where doctor says that "for one third of patients there will be no benefit" - which means that for 2/3 it will ! I think that 66% of benefit outweighs 33% with no benefit. Missing about 30% chance of perhaps even being cured is not something that my husband and me are willing to gamble away, SA or not.