I'm happy with my Maha-9000 charger for AA and AAA batteries, but since I've found BLF I'm afraid I will need a newcharger for

This is a really popular charger. I have the Tenergy version of it, all of my Lions fit it and it terminates at exactly 4.20 every time so I can recommend it.

http://www.dealextreme.com/p/trustfire-tr-001-multi-purpose-lithium-battery-charger-12594

http://www.amazon.com/Tenergy-Multifunctional-Cylindrical-Rechargeable-Batteries/dp/B0026NA9GE/ref=sr_1_6?ie=UTF8&qid=1309015078&sr=8-6

I have this hobby charger also but I don't use it much it is kind of overkill. It is good for measuring cells and it will charge anything if you want to have only one charger.

And welcome to BLF.