Hello Carol and a belated welcome to the site.
What Brachytherapy was originall offered as there are two kinds.
Permanent Seed Brachytherapy and High Dose Radiotherapy which is a one off.
My husband has been told that his seed brachytherapy has exactly the same chance of cure as an operation and he had the procedure over 3 years ago. He is however, a lot older than your husband.
With any of these treatments there is potential for side effects, some of which can be long term. Obviously all men are different in their reactions to treatments and it may be that your husbnad, which ever route he takes, will be one of he lucky ones but you should be aware of them and research as much as you can.
Unless your husband has been advised that he has to make an urgent decision as to treatment then I would personally advise that he takes his time.
Go to publications on this website and download the Toolkit. There are also nurses on here you can speak to, but remember
nobody can advise as to actual treatment choice. That is for your husband to decide (with your help of course)
If Brachytherapy is undertaken first then there is little likelihood that surgery could follow later as the prostate will have been "fried"
Just make sure that whatever route he takes he feels it is his best option and not one chosen for him by a doctor who specialises in a particular treatment.
Best Wishes in your research
Sandra
Hopefully there will be others along soon to offer their own opinions.