As of 23/11/2015, the price for Pushbullet Pro is $39.99 yearly/$4.99 monthly while AirDroid Premium is only $19.99 yearly/$1.99 monthly/$38.99 biennially.

Pro
It's a Swiss Army knife of cross-device functionality

In addition to SMS management and notification mirroring, it includes the ability to transfer files, URLs and clipboard, view through the camera lens of the Android device on another device, and completely control all functionality of a rooted Android device on a different device.

Pro
Straightforward SMS manager

In addition to allowing you to send and see incoming messages using an intuitive interface on a computer, the app also allows you to manage contacts.

Pro
Supports cross-device notification mirroring

SMS and app notifications as well as incoming call notifications are mirrored on the connected devices.

Cons

Con
Considerable delay when sending SMS messages via computer

Messages sent via computer can sometimes be delivered to the recipient with a delay of up to 10 minutes. Because of that holding a conversation might be difficult and it can needlessly drag out.