Which Nitecore model or any battery charger model would you recommend for charging IMR 18350, 18490, and 18690 batteries? I want one with independent charging indicators, at least 2 battery charging slots, and shuts-off or goes into trickle charge when battery reaches full charge. I currently have a cheap single slot, generic charger that I bought from fasttech, which actually works pretty good for the time being. After reading so much horrible scenarios with using cheap chargers, I want to upgrade to something more reliable.