I posted this on another thread however
prostrate cancer runs in my family. My borhter opted for radiation,
I had RARP recently
However, our 96 year old uncle had radioactive seeds probably 40 years ago and it seems to have been the best choice for him. He is living independently with my aunt. This is anecdotal

. In my case prostatectomy was recommended and I believe it was the best choice ( the cancer was growing)
I do not know much about the seeds maybe you have to be at low and early stage

I really think it is good to get multiple opinions. I did.
There seems to be a great debate between surgery and radiation ( and there are different types of each) There are different down sides to each and it can be frustrating to encounter such diverse opinions and predictions.
You can definitely get ED and incontinence from either (and other things). The cancer still must be monitored afterwards
Surgery is no walk in the park; recovery from surgery can be rough. However, from what I have learned about radiation, the side effects can rear their ugly head months and months down the road.
Robotic-Assisted Radical Prostatecomy (RARP) seems a good option. I had this three months ago, I had a very skilled surgeon. However, my brother would likely share how happy he was with radiation.
If you do elect to go with surgery, feel free to send me a message.
Definitely get a lot of opinions and read up on things (try to also keep in mind, some urologists and clinics do a better job of others in terms of putting good information out there.
I like research,, and I suggest you do some
Try this. search prostrate cancer treatment options comparisons you will find some reputable sources ( teaching hospitals, prostrate cancer society) and some commercial sites. If you check out some of the sources you will quickly encounter serious bias.

now try the same search prostrate cancer treatment options comparisons but this time add pubmed at the end Now you will get to the good research. studies that are peer-reviewed and produced and checked out by experts in the field and world.
bottom line, be aware of significant bias, still it seems efficacy does not have a winner yet