I think
Bruce and
Brian, as well as
Brenda and
Brian sound nice. Not too similar. Though I think many dislike "twinsy" names, so
David and
Brian seems more modern thinking.
"You sought a flower and found a fruit. You sought a spring and found a sea. You sought a woman and found a soul. You are disappointed."
"It does not become me to make myself smaller than I am." (
Edith Södergran 1891-1923)