Since I am usually (and sometimes foolishly) not of the faint-of-heart in these things, I throw out the following as a thread starter. I hope others can contribute.

What are your thoughts on Potassium Bromide (KBr) vs Ammonium Bromide (NH4Br) vs Sodium Bromide (NaBr) as a source of Bromide ions for precipitation?

I've only used KBr myself as that is what I have in my shop, but have seen recipes/formulas using all three variations.

-- Jason