Tell us about yourself!
What heating element is that?
Lipos are cheaper and easier to setup. To get a decent LiFePO4 Pak you usually have to make your own.
Well since the hobby world uses them primary, they are widespread and there are lots of fuses on how to set them up.
Thomas im not sure what you were respomding to based on his question but LiFePO4 cells do not have cobalt.