With an A+ rating from the Better Business Bureau, Stackry is a well regarded provider of US shopping addresses. They have been shipping since 1986. Shipping is provided primarily by FedEX, USPS, DHL Worldwide Express and Global Mail, and they offer a simple fees structure.
There are no joining or monthly fees, just fees for when the packages are forwarded on, and if you need such money saving extras as consolidation and repackaging there are simple fees for each as you use them.
Based in the USA's state of New Hampshire means that you can take advantage of tax frees shopping. Personal shopping is available for a small fee capped at a maximum $100.