I have 3 aircraft, two with the Stratus ESG and 3i, one with just the Stratus 3. ifly works great. In one plane I have the same setup as khafner, Aspen, IFD440, and Stratus esg with 3i. Works as he said.
One word of caution with the Stratus 3, if you fly with a buddy that brings along their tablet running Foreflight, warn them off of clicking on "Activate Stratus for Foreflight?". This will highjack the connection to your iFly as Foreflight uses their own data format. The Stratus 3 will only work for Open ADSB or Foreflight, not both at the same time. I had this happen a couple of times and it took some time to figure out what was happening.