This is a really good question for our forum. Do you mind if I post it? You'll get multiple answers.
For about a hundred bucks this Hiromoto Santoku is hard to beat: http://www.chefknivestogo.com/hisakn19.html
This Dojo is out of stock now but we'll have more in a couple weeks. This one takes and holds a great edge and it's under $100. http://www.chefknivestogo.com/dojogyuto180mm.html