Smart IR Remote works great and has nice widgets. Watch On blows...
It works fantastic, and their support is top-notch. I worked with them all summer on bugs, etc.
If you have access to an HTC One, the hardware IR implementation on it supports code learning, so you can "teach" it commands. I had to do this on some devices I had remote controls for that were not supported. I created a device, learned the codes, and then did a backup of my config within the app. I then restored that backup to my various devices with IR ports (Note 3 included) and it worked like a champ.
Smart IR takes Watch On to school in every respect. EASILY worth the cost if IR is really important to you.