Thanks Andy.
It does make sense that lower PSA levels (a general marker for prostate cancer) would be preferable for the long-term prognosis. However, as you alluded to, there comes a point where further reduction in PSA might not be possible. I fear I may have reached that point now. I received a call from the oncologist this afternoon (a nice chap) advising that after 4 months on hormone therapy, I really need to proceed with the RT as scheduled in 6 weeks time regardless, and that I really just need to get on with it. I’m in no position to argue, and neither would I want to.
On his direction I'll begin taking Bicalutamide tomorrow, in addition to the Zoladex I'm already on. Interestingly, he doesn't plan another PSA test until after radiotherapy and brachytherapy, which I find slightly odd. However, I’ll get one done privately a week before RT, just for my own baseline reference point.
Thanks for your input Andy.