The RAM Mount is the way to go! Very solid and reliable. I feel very comfortable with it holding my iPhone. The cradle that the phone sets in works great and can be rotated slightly.
I also installed the TAPP USB outlet to power the phone. It's a new model
with 2.1 amps to charge more power hungry devices like tablets.
Installation was pretty simple. One end is secured to the handle bars and the other end is wired to the battery. There's a rubber cap to cover the USB port when not in use and to keep moisture out. I found that it drained my battery after a few days so I installed a cut-off switch and it hasn't been a problem since.
Here are some pics of the install and final product.
I have a short black iPhone USB cable on order
Charging the iPad