The colors are too dark to start with and the text is either too weak or too bold. I also think the letter marks are too big compared to the actual name. I love the creativity with letters B and C and I particularly liked #5 so I kept it in my ranking to give you another chance.
I think you need to improve the designs a bit. I kept 3 of them and I am willing to give you a chance but they should look less common - I need something to strike me and others to remember me by.