We've got a 32" Samsung LED on the wall opposite the sofa, quite happy with it! I looked at Chromecast and decided it wouldn't work on a boat without a internet connected wifi network. In effect it doesn't mirror the image from you iPad to the screen, using the data on the iPad, instead it tells the Tv what is on the iPad and where to find it on the net, the Tv then finds this and displays it on screen. So, if you have a dongle, with a wifi router that both tv and iPad are connected too, Chromecast will work. If you iPad has a sim in it, or you are connected to a public wifi network, Chromecast won't work.