I'm thinking about getting the Streamlight Syclone. I like most of its features, including the dual bulb, waterproof, NiMh rechargeable, etc.. I'm a little concerned about the recharge time (12 Hours?) for its NiMh battery pack. The NiMh pack can be replaced with 4AA batteries as well. Can anybody tell me if 4 AA NiMh rechargeables would work in the Syclone, and also any general opinions about it?