I'll use NiCds until they start dropping on the cycler. With 6 volts if I have that oh so rare instant dead cell it won't crash me.

Spontaneous lipo fires are practically a thing of the past. They can still happen yes, but with a balance charger using an appropriate rate on a pack in good condition there is no danger. Lipos will get hot and puff before bursting into flames, so if you're paying attention you won't burn your house down.