This is a great Stethoscope no doubt, however I feel that the Eko 300 is more conducive to my patient population. I don’t like that I have to actually put the stethoscope on the skin to get a rhythm on the stethoscope screen. Eko 300 offers the same feature that the 500 does in regards to viewing the rhythm in the app, so I just dont see how this makes it “better”. The volume and quality of the lung fields are better however I feel I do better with the pitch with the 300. One feature that stands out is that the 500 is compatible with your earbuds! You dont even need the stethoscope part! This is probably comparable to the Ark of the Covenant for Cardiologists!