Welcome to the club none of us asked to join!
It's pretty much been said already: with prostate cancer, we don't talk about cure too much, though it can happen, mostly when it's caught really early (stage I or II). For most of us, long term remission in a slow developing disease is the best we can hope for, and 50% of people with prostate cancer don't die of prostate cancer - and most of that half aren't even particularly inconvenienced after the treatment.
Large scale, long term research shows that PCa survival is pretty much the same for most treatment options - and they all improve as technology and techniques develop over the years.
The really big difference is in the side effects profiles of the different options: they really are very different, and - depending on your lifestyle and situation - one may be much more suitable than another. Cancer is always a life-changing event, but with prostate cancer, it's the treatment that forces the biggest changes.
On the bright side, with PCa, more than many cancers, usually allows you to 'live with cancer', rather than the alternative, for many years.