I used lots of stuff, a dedicated charger that came with a Futaba air radio, a cheap Rayovac AA only 4 individual cell peak detect charger that I bought with batts for our digital camera, and every kind of RC peak detector charger I own.

Which do I prefer? Whichever one is handiest when I need a charge is the first choice. But I do like the cheap individual cell charger to get them all equalized at charge, even if it only does 4 at a time. Never had a SpinTec Individual Cell Charger, this is my low budget imitation! But I don't really think it's that big of a deal either.

Cheers!