Would the 598 cs be a worthwhile upgrade to my existing JVC HA NC 250 ? I listen to all genres and will listen in my office , so need a closed back headphone . <| sep |> I ' ve been playing a and political style control deck and it ' s been a blast . Since I ' ve been playing it i haven ' t so much as lost a game with it . It ' s only loss so far has been when somebody else ran it , and that was . only because I stopped it from combing off with Nivtandem lookout . As for other partner decks , I ' ve seen a few and none have been bad . I think some partners are weaker than others , but I think all of them have at least one good paring . I don ' t think many of them are competitive but I think that ' s okay , and I don ' t think I would want them to all be good anyways .