I rarely use the same phone for more than a month or two... It's a personal problem. Lately my main drivers have been an iPhone 5s and a Moto X. I'm currently carrying the iPhone 5s.
As far as mobile apps:
- Chromecast
- Harmony (Remote Control)
- SoundCloud
- Spotify
- Netflix
- Kindle
- Duet (game)
- 1Password
- Square Wallet
- Instagram
- MyFitnessPal
- RunKeeper
- Fitbit
- ESPN Sportscenter
- Meetup
- Sunrise (calendar)
- Evernote
- Skitch
- Dropbox
- Google Hangouts
- Skitch
- Pushover (custom push notificiations from IRC)
- Waze (GPS)
- Clear
- Facebook
- Tweetbot
- Google Authenticator
- Slack
- Alien Blue (reddit client)
- Colloquy (IRC Client)