ElevationDock 3
Over at The Sweet Setup, the ElevationDock 3 was chosen as the best dock for the iPhone 6s and 6s Plus. ElevationDock 3 has the best combination of looks, features, and design of all the docks tested that were tested. It comes in four different colors of milled aluminum and looks phenomenal on your desk. It accommodates multiple case sizes (fits most cases with a max thickness of 4.25mm and max width of 86.8mm), and it comes with it's own lighting cable.
ElevationDock 3 can be purchased for $89.00. You can read the entire review over at The Sweet Setup.