The Blazer torches are great in my opinion
http://blazerproducts.com/industrial.html. The BIG SHOT INDUSTRIAL TORCH is more powerful and versatile, but the GB 2001 MICRO TORCH is loved by many, and would do a perfect job in this and similar applications. Obviously, for such a small part, almost any torch will do.
I usually use Borax for flux, and for this application I will go with a silver brazing wire of 40% or 50% silver. There are many alloys available, but I have mine for many years now and I do not remember how I got them, nor the brands.
In general, the higher the silver content, the higher the price, melting temperature, and hardness (as well as somewhat increased difficulty in brazing --- but this is a very rough statement).
I find the ability to silver braze to be a good thing to have. I do not use it often, but it was just the ticket on a number of occasions.