More USB ports
LG 42LM660S has 1 more extra USB ports which is widely used by most of pluggable devices such as digital cameras, external hard drives, wireless keyboards, mice etc.
Much less power consumption
Around 38% less power consumption per hour (32 Watt difference). It is better for your pocket and environment.
44% thinner design
11% lighter design
With PiP (Picture-in-picture) you can watch more than one broadcast at a time. You might need another signal source even though your TV supports PiP. ( Like cable and satellite broadcast )
VESA mount support
You can mount your TV to the wall by any products that has VESA logo on it ( Video Electronics Standards Association ). If your TV supports VESA mount, you will have more options for your TV to mount it.
Wider audio format support
AC3(Dolby Digital), EAC3,HAAC,AAC, Mpeg, MP3, PCM, DTS
MP3, WMA, LPCM
This model supports more audio formats compared to Sony KDL-46HX750. It is crucial for watching movies and listening to tracks with various audio-codes and file formats.
Active 3D glasses
There are several 3D technologies on the market. Some TVs require active glasses (which require battery special electronic-ware), some TVs have passive, simpler glasses. Active glasses are capable of displaying full hd (1080p) resolution to both eye where passive glasses split up the resolution and provide 540p to single eye.
Approximately 20% bigger screen
Wider video format support
WMV, MPEG1, MPEG2PS, MPEG2TS, AVCHD, MP4Part10, MP4Part2
HD, DivX, MPEG1, MPEG2, MPEG4
This model supports more audio formats compared to LG 42LM660S. It is crucial for watching videos with various video-codes and file formats.
Supports lots of video formats
42LM660S : HD, DivX, MPEG1, MPEG2, MPEG4KDL-46HX750 : WMV, MPEG1, MPEG2PS, MPEG2TS, AVCHD, MP4Part10, MP4Part2
Very high refresh rate
Local dimming is the process of switching off appropriate lights at the back of the screen which is managed smartly by the TV itself regarding to the brightness and contrast of the scene. For example, with local dimming you can see the burning section of a lit candle (on a black background) sharper because black areas will not be backlit.