what do you need it to do?
for almost all uses i can strongly recommend this:
http://www.dealextreme.com/details.dx/sku.3609 :: Blue-grey
http://www.dealextreme.com/details.dx/sku.3607 :: Black
uses a Cree P2 LED and only a single AA battery. very bright, good runtime, nice and small.
it's brighter than a C or D-cell maglite and about a 10th of the size.
unlike nearly all Chinese torches, the clicky-switch on the back works "forwards", ie, you can push it halfway and the torch will turn on until you release. most Chinese torches (
including fenix ones!) won't turn on until you push the button all the way until it clicks and then release.
<edit> and it doesn't have any annoying modes. it's just on and off.