@frank1956, given a choice between SBRT or HDR Brachytherapy, which treatment would I choose?

Of course it's not a simple decision. There's so much information to digest and there are a ton of personal factors to consider. It's definitely not a one-size-fits-all-cases decision.

Fortunately, as you already mentioned, I believe both have statistically similar outcomes.

All that said, given what I know about your Gleason 7 case, I'd choose HDR Brachytherapy monotherapy -- mostly because I like that it's a focal therapy that directly radiates the cancer inside the prostate with temporarily-inserted pellets. https://www.youtube.com/watch

To put my opinion in context, I had both SBRT and HDR Brachytherapy with Dr. Chang at UCLA in March2023.

I'm not suggesting you need both treatments. Just saying I can compare 'em based on my experience.

A little background: I was diagnosed with Gleason 9, Stage 2 PCa in Dec2022. Confined to prostate (see attached PSMA PET scan), my treatment plan covered the prostate, seminal vesicles, and local lymph nodes. And ADT (Orgovyx) for a year, starting about 2 months before beginning treatment.

Not sure what info you'd like, so I'll just shotgun some thoughts:
1. UCLA is excellent for treating prostate cancer. And Dr. Chang's UCLA team is terrific!
2. My HDR/Bt was an out-patient treatment. I arrived at 6 am and was discharged at 2 pm. Two days later I drove home 3 hours; that is, allow at least a day for recovery.
3. Take the pain meds they offer before the Afterloader is removed. It's tolerable but very painful; thankfully, the pain disappeared almost immediately.
4. After I was discharged, during the ride to my hotel, surprisingly I had no pain and just a little discomfort that resolved within a day.
5. Not surprisingly, there was no pain or discomfort during SBRT treatments. Just some mild fatigue afterwards, especially the last two treatments.
6. Confirm your treatment location in advance and plan accordingly. My HDR Brachytherapy treatment was at a UCLA location in Santa Monica. SBRT was at UCLA in Westwood.
7. If possible, especially for SBRT, stay in one of the UCLA housing options in Westwood. It's an expense, yes, but you don't want to risk missing an appointment due to unexpected traffic jams. Also, it's much more convenient if you're housing is nearby in case your appointment is delayed/re-scheduled.
8. They're booked solid for SBRT... unexpected issues can cause delays in treatment. Of my five SBRT treatments, only one started on time. And one was re-scheduled to a later time. Most started at least 20 minutes late. Bring something to read and/or digital entertainment with headphones.
9. Pre-treatment protocols for SBRT include a self-administered enema and "full-enough" bladder, which can have unfortunate consequences if you're stuck in traffic.
10. Travel much? https://www.amazon.com/dp/B000NV878S

Sorry for the long post. Hope that helps. Best wishes.