Might try the ..... Lambda SMD+ "pill". It's about $25.00, postage paid and I think is currently available, I like mine. I don't think it will work in the modified 1AA minimag's though.
Lambda's MiniPro can use with 1 AA and make much bright out put. waiting for more available soon. http://home.mchsi.com/~lambda2/minipro.htm
I have it one and it is very bright with 2AA.