I picked up a Wahoo RFLKT+ to mirror from my phone. So far so good, but I have noticed that riding next to high tension power lines tends to interfere with the BTLE signal between it and my phone. All I had to do was move the phone from my middle jersey pocket to the right pocket. That said, I'm still on the fence over another Garmin (had the 500, broken in my accident). I need more time with the RFLKT to come to any sort of conclusion.