The 55-inch VF551XVT (MSRP: $2,200) comes with LED back-lighting and the ability to modify the contrast and color saturation of the LED. Other 240Hz, 1080p XVT models come in 47-inch and 42-inch.  Set to ship in July, the SV470XVT (MSRP: $1,500) comes with Vizio's smooth motion technology as well as Truvolume, a feature that controls volume fluctuations when a commercial break occurs.