Just ordered M1, which batteries and where to get them?

[EnterTheSwamp]

Just placed my order for the M1. What are the best batteries to put in this torch to achieve maximum brightness? Where is a good place to buy them online, because at the stores they are really expensive.
Thanks

 

[riffraff]

I just ordered one, too, and the same day I ordered ten 2-cell "sticks" of Titanium CR123A's from amondotech.com. The next day I received an email stating they had shipped. Titanium 123A batteries are recommended at the Flashlight Reviews site.

http://www.amondotech.com/index.asp?PageAction=VIEWPROD&ProdID=946