Bill Gross has just written one of the best descriptions of current investment limits and possibilities, and he has done it calmly and with seasoned wit. It's a mood or feel analysis but informed by his decades of successful experience: http://www.pimco.com/EN/Insights/Pages/Credit-Supernova.aspx
Gross describes what many of us are feeling about and trying to do. To be sure, his firm has products to assist us, and I think his firm does a great service thereby to the investing public as well as to themselves. As you may know, this site is totally non-commercial. I don't even get credits from Amazon for books I like. So if I like something, it is MY personal opinion and not paid for.