Going brunette?

Hi all! So I am growing bored of the same old hair color that I have. I have been blonde for years and I think it's time for a change. I am incredibly pale with pink/sometimes red undertones. Blonde brings out a nice quality in my skin tone, however, I know there are shades of brown that can do the same. I am just needing some opinions on different color browns I should go with.

Here's a picture with dark brown lowlights

Here's a picture of my hair now.
The reason I want to go brunette is because I'm tired of the blonde turning brassy, I also notice that when I went brown before, my hair looked thicker than it does when it's blonde.

Let me know if you guys have any opinions or suggestions!