I have a cedar one by Richard Shively and really like it. Last year was my first year using it/one and it did well. I have said it before and will say it again, I still can' t belive this little two ounce box can sing so loud and pretty. Here' s his link in case your interested.....
http://www.superyelper.com
He also has them in Walnut and cherry and also has sound files so that you can hear the differnce in the three.