My favourite flashlight is the Fenix T1. Its tough, reliable and has a powerful and well formed beam with good run times. I regard it as a reference flashlight by which I judge other flashlights.

I also like the TANK007 TK-506 Cree Q2-WC Stainless Steel 3-Mode 95-Lumen LED Flashlight (1*AA) from Dealextreme. Again it is tough and very well made for the price.

http://www.dealextreme.com/details.dx/sku.18625

But I EDC a Fenix P1D CE Premium Q5