Most LCS TV's have a zoom function that slighly enlarges if it is being transmitted with the black bars. Also you can make the LCD view always in 16:9
With regards to sky + and sky + HD, there are settings in the set top box for 16:9 ratio, which are very easy to do. I have a HDMI connection from my sky box and my upscale dvd player and can change the aspect ratio.
If you click here then you can view the manual for the tv you want to buy and can see that you can change the aspect ratio