Neither am I tired of them! They bring the highest output, the cells work in any conditions as they should, they don't leak and have a shelf life of 10 years. :thumbsup:
I order them at my favourite austrian dealer, so they aren't much more expensive than AA-Alkalines. Don't buy them in your local photo-shop though, you will pay twice to 4 times the price. By now, i didn't have any problems with "no-name" cells, mine are called "Cytac"...
Of course, I also use AA-lights, powered by Panasonic Infinium rechargeables, but I'm never in a dark forest at night without a CR123A powered light in the backpack!
I must admit that I'm a little bit tired of my L4, which burns 2 cells in an hour, but knowing that, I only use it when I really need it. For the rest, a light like a TK10 or an M20 has long runtime with 2 cells, you needn't keep it on high all the time. Same thing for the EagleTacs, reserve the high for the situations you nee to flood the wood with light and your cells will last.
NiMh-AA are good alrounders, but you never know how long they really run and how they will behave...