I am in the same arena. HIFU or TULSA? I am a good candidate for both and after hours of research and 3 consults, I decided that I like the risk and rational for TULSA. I also found some clinical data with both compared PRO/CONs results. The procedures are 'cousins' in terms of the type or treatment with different approaches. TULSA treats the prostate from inside/middle of prostate, using real-time MRI data, through the urethra straight to the 2 aggressive cores. HIFU uses a same treatment except through you anus and using an MRI taken in the past, heats the cancer cells through the bladder. I found a clinical report that had both HIFU and TULSA results with TULSA having fewer side-effects. I believe that I may have a Active Surveillance option since I am just borderline 3/4. Decision date is Labor Day for AS or TULSA. based on few more second opinions. Good Luck