At the first link they said a new model of the Universal Dock Adapter called the Dockboss+ will be out at the end of September.
They are both made by the same company. The difference is that the Universal Dock Adapter and Dockboss+ provide a usb connection for charging and data as well as audio, while the Dockboss only provides audio. When searching the net for Dockboss+, I found pages saying that the Dockboss+ has a micro USB male connector as well as an audio connector, while The Universal dock adapter has a female standard usb jack and an audio connector.
For the Fuze, the Dockboss is the best choice. For power, he could get a separate car usb charger. Finding an adapter cable that goes from female micro usb to female usb probably won’t be easy. All the micro usb adapters I have seen have a male micro usb connector.