I have enjoyed working on a twentytwelve child theme, and I am wondering if there are other quality themes anyone can suggest. Not interested in frameworks or starter themes, just quality themes for making child themes from. I like the idea of using underscores, but my CSS is not up to the level where I can use it. Still learning. twentytwelve has been a great theme for me. I trust the code and like that its maintained by Automatic. Are there other themes that serve this purpose well?