I am considering getting the Slingbox 500 to replace "cable" in my son's apartment at college (the cost of cable is extremely high and one of his roommates doesn't want to chip in). Is anyone using it for the same purpose and if so, would you recommend it? I also have a silly question. If I connect it to his room's cable box where nobody will be staying (located at my house) does the tv need to be on at all times? Or can the tv be off - and he will be able to remotely use the slingbox from his apartment at college without interrupting my husband and my tv watching. Also, how easy is it to hook up to a tv using Chromecast? Any advice/suggestions/opinions would be greatly appreciated. Thanks in advance for your time!!