I'm not a big fan of Gonzalez but there's something about Murakami that I'm not comfortable with.
She strikes me as a NIMBY but with all of Seattle being her backyard. She seems to want to turn back the clock. And that's just not possible. We will continue to grow and we will continue to need increased density if we are going to have a hope of having affordable housing. Her website talks about her priorities but she doesn't offer any solutions, only platitudes about how she will "work hard." There's nothing about her that tells me she has great ideas or that she will be effective in implementing them.
I'm viewing Position 9 as a wash. Gonzalez has proven to be ineffective, Murakami seems as though she will be ineffective. Vote for the ineffective incumbent and hope experience provides an epiphany, or vote for the ineffective newcomer hoping they will rise to the occasion? 
Nether is a great choice. I haven't decided yet.