I dunno much about chargers. I have an expensive Hyperion model.
I wouldn't bother with an expensive charger or battery.
A GensAce 10,000 mAh battery will cost you $60. I have over a dozen GensAce packs, and I love them, but my next battery will be the SPC LiPo I mentioned before.
I would rather have two 5,000 mAh batteries than one 10,000. Why? After using up a 5,000 pack it's a good idea to give the RC a short rest and inspection. You know, an ounce of prevention is worth a pound of cure. Also, you can charge one battery while running your RC with the other. With one battery, you have a long down time. When I want to run my RCs, I don't want to have to wait! I'm impatient. Also, should a battery fail, you are not without power for your RC.
Lastly, once you go LiPo, you probably will never use your NiMH battery again.
that rock popped up outta nowhere