Get one that says it has a peak detect option or says it only charges them as much as they need (this indicates the same thing)

A good NiMh charger should leave the cells slightly warm but not hot. I've got a cheapie that leaves them hot at the end of the charge. That means some small damage each time that adds up. Lukewarm is fine but if they come out hot that's bad.

Brands change constantly. I've got one from about a year back but I can't find it on the 'net now. But it works well. A hair over lukewarm but far from hot. The Everready one I tossed. They came off "cooking" hot.

One that google found for me that looks like it's got all the right stuff is this one....

http://www.onlybatteries.com/showite...t1=11&uid=1644

The negative V peak Smart Charge is the key thing. That'll peak your cells without overcharging them if they aren't fibbing about using the delta V method. The status light and microprocessor controls are just a bonus.