I started with the extra power pack that gets installed inside and connected to your door chime. It was the more complex part of the installation and involved a very tall ladder but it went well. I was impressed that the ring doorbell came with everything you need to install it – including the drill bit AND a screw driver. It even has extra bits you MIGHT need (like extensions wires and extra screws). I also really appreciated how everything was in separate baggies for which part of the install you were doing and was very well labeled (extras were labeled as extras, pro kit wires in one bag, doorbell wires and screws in another). I was unable to fit the power kit inside my chime housing but it doesn’t look bad attached to the wall just outside the chime housing (see picture). It’s just a bit larger than a matchbox.
Finally, unlike abode’s base station (iota does not require Ethernet), Ethernet is not required to use Nest Secure. Nest likes to make things easy and they send everything you need, including batteries, to get your device up and running. Nest Guard ships with a 6-foot cable with a power adapter and CR123 batteries for the sensors. My system already had the batteries installed which made setup even easier.
While the August doorbell offers a more symmetrical picture with no barrel distortion, it doesn't support IFTTT integration like the Ring Pro does, and Ring's monthly cloud fees are a bit more affordable. As such, the Ring Video Doorbell Pro is an Editors' Choice for smart doorbells. The SkyBell HD is another top pick, and offers features that Ring doesn't, such as color night video, free cloud recording, and compatibility with Nest smart home devices.
Ring also sells several cameras including the Ring Video Doorbell, the Video Doorbell 2, Ring Elite, and Video Doorbell Pro. They also sell a Floodlight Cam, Spotlight Cam, and two versions of their Stick Up Cam. Most of the cameras are geared toward outdoor use with the exception of Stick Up Cam Wired and Stick Up Cam Battery. The two cameras can be used indoors or outdoors.
Update 1/24/16 - I have found a fantastic use for the Ring Doorbell and Chime. My mother-in-law, now in her 90s, lives by herself. She has become hard-of-hearing and often does not hear the doorbell. By installing the Ring on her door, she now is bothered much less (solicitors tend to recognize it and don't seem to like it) and when someone rings the bell, the Chime, placed by her favorite chair, gives her a better chance of hearing someone at the door.