Depends on the situation. If the lighting is better served by HDR, I use it. Otherwise I just leave it off. Almost all my editing is done on my Mac for pix I want to keep. I only do simple edits for posting to FB or similar.
I use HDR when I'm actually trying to take a good picture, that way I have options afterwords so I can pick whatever turned out better. I don't use auto HDR because when I trust it to take an HDR picture when I can tell the scene really needs it, it doesn't take an HDR photo. Or it takes it randomly when it doesn't need it. I just prefer to use it when I know it will be useful to me.
I never use auto enhance, I like to go more in depth and edit particular things.