Like many of my fellow reviewers I've been going to W for about 3 years now and visiting the lovely Nina. She always knows exactly what I'm thinking of, even when I don't know myself, she helps me push my hair boundaries which I love.
The staff at W is also great - friendly and just the right kind of talkative. There is a younger guy who works there that gives the absolute best shampoo you've ever had - I was totally blissed out, and would have stayed there all day if they let me.
I find the price really reasonable considering I have long thick hair and usually do a couple types of colour & a cut, but I think the prices vary by hair type.
Overall I would encourage you to walk, no run, to W next time you need your hair did.