If you want a decent or an awesome charger source out your local R/C shop. These guys know a thing or two about batteries, types of batteries best choice for what you want it to do, how to keep it alive, cycling it, etc.
What is always handy is a charger that you can hook up to a car battery. This way while your inhaling your chow you can top up your battery. You'll be popular with your buddies too!
Canīt sleep. Clowns will eat me!