I do like both, but I prefer BE, and it's easier to find a matching shade. LG's is tricky, because if there's too much yellow running through the BnB then it doesn't match me. I wear Fairly Medium to Medium in BE, and in LG I wear Fair, unless there's too much yellow running through it, then I can't wear it. I also feel like BE's coverage lasts longer that LG's.
I can't speak about LG's porcelain, or whether or not it's okay for sensitive skin. My skin is pretty normal but it can occasionally have a reaction to something, and I've never had a reaction when using BE or LG.