Blonde or black?

I'm growing my hair out (which i was also indecisive about)and I've never had my hard dark and long. Only dark and short which my boyfriend insists is his favorite but I hated it. Maybe it would look good if it was dark and long. It's currently blonde/light which is good because I like to put colors in it when bored but also bad because it's a lot of upkeep. The last picture is my natural color. In my mind black hair could be very face slimming but also when I look back with my short hair i feel like my face looks more full so I'm not sure