Had a Garmin Edge (older one), and went to iPhone with Wahoo App. I carry my phone with me at all times anyway, and it has a bigger color screen, and Internet to upload rides. I have the Wahoo Blue SC, and Blue HR. I also have the wahoo case, but I quit using it after I got a Lifeproof case with the bicycle mount. That way I don't have to take my phone out of my case (Nuud) to use it for my cycle computer. It's really the perfect setup.

So here's what I have:

iPhone 5S with Wahoo Fitness App
Lifeproof Nuud Case
Lifeproof bicycle mount
Wahoo Blue HR
Wahoo Blue SC

I really love this setup. Mine has never dropped the sensors. The only con I see is battery life will be good for roughly 4 hours. After about 3:15 I have roughly 50% battery life. The only way I could get that time out of it was to turn the brightness down as low as I could barely read the screen, which was ok. But I just ordered a 6000mAh portable battery charger... Amazon.com: AnkerŪ 2nd Gen Astro 6000mAh (2A Output) Portable Charger External Battery Pack with PowerIQ™ Technology for iPhone 5S, 5C, 5, 4S, iPad Air, mini, Galaxy S5, S4, S3, Note 3, Galaxy Tab 3, 2, Nexus 4, 5, 7, 10, HTC One, One 2 (M8),

To each his own but I think it will be the perfect setup for me.