I have the IFLY 737 and wow what a thrill it is to fly it like the real thing! Ok almost like the real thing. The fact of the matter is this. For many years I was happy with PMDG and their series of 737 and had grown found of them, Well when the IFLY was being announced I was interested in what they had to offer and boy was I blown away. I mean here is pmdg and now IFly with a setup that make em feel like a real 737 captain. I have to 2.1 release and it flys great.