I will choose neither. You should either go 650M or LC40L55M which the latterhas superb sound and PIP. Both are 100/120Hz series. 650M however do not have PIP. BX series is not recommended unless you want the FM radio which is pointless. Either go for EX series for sony, but heck, that is like RM3300 with only a light sensor as the main difference. Sharp model all has opacity control.