Here is my latest homemade.
http://lh5.ggpht.com/_CFBbJM0CWfE/Sy...0/P1050329.JPG
Only run it up to about 300 Lumen with the small battery, put the 40g heavier one on and it will do 500+ Lumen.
On the comercial front Fenix have the HL10 (4AA) with 220 Lumen for reasonable money and are introducing twwo new models HL15 (2AA) and HL20 (1AA) which look interesting.
The best bang for the buck by far is the
Magicshine quality can be a bit variable and it's more like 500-600 Lument not 900 but for the price it's a great deal.