Ah , I am OP ? <| sep |> Uh , that patch was from Sercomm . Sercomm is an ODM that most of the consumer networking companies use . So , it really doesn ' t have anything to do with Netgear . If memory serves me correctly , Ubiquity even uses them . <| sep |> I can ' t believe he ' d ever make an extreme comparison ! IAG 0 MgsKb 4 t 12 m 1 s <| sep |> Easy for you to say . <| sep |> The difference between the three is minimal , HD 598 CS has a closed design which prevents noise from leaking and features a different driver . They sound similar but have a slight bit of bassier sound signature to them just due to the closed design . The 599 is pretty similar to the 598 , there isn ' t a huge difference between the two from what I could tell . The difference for me was the HD 600 HD 650 which is why I went with the 600 over the 598 599 in any design .