I use the Ultralast ULCC8H. For $11, it's hard to beat. It charges 8 batteries at once (so you can charge your back-ups too!) and will charge either NiHM or NiCd.
As a side note, if you're looking at getting into the rechargeable battery market, try to stay at or above 2900 mAh for flash use.
AA Eneloop battery is 2000 mAh. does that mean they suck? Which AAs out there have over 2900 mAh? I need batteries that will fare well in the cold as well, and i'm not talking a day at the ski slopes