I use a sling box since I travel so much. My home DVR records the shows...I pull them up while on the road to watch college basketball and football that is regional.
It is NOT a replacement for a TV. Fast forward, pause, rewind are terrible with so much lag. Also, I am always in an area where there dis high speed. As ependydad says, it uses a ton of data.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).