Treatment of early prostate cancer (which means cancer has not spread and is localized to prostate) in your case can be;
a) radiation therapy, and
b) radical prostatectomy; which can be open, laparoscopic or robotic (da Vinci robot).
The choice of definitive therapy has been suggested to make not much significant difference in long-term survival.
c) Active survillance.
So it is your doctor and your choice to choose the treatment; as long term results are similar for all the treatment.
A Robotic surgery has an advantage that it removes whole of the cancerous prostate without affecting the nerves of erection. So out of all surgical procedure, it is best in good hands.
The radiation results are similar in survival benefits. But it avoids surgery thus there is no admitted hospital time. Though it may cause long term local complications like rectum inflammation.
We can discuss this further since now you have initial information.
Please feel free for your follow up questions.
I would be happy to assist you further, if you need any more information.
Thanks for using Just Answer.