TV Digital : Digital Stream

I was on the Radio Shack store last Friday looking for something and found out that Digital Stream have a new model on sale. The model number is DTX 9950. It the same converter with the same features, only that it has Analog Pass Trough, a feature that allow the viewer to watch analog signals on the converter. The Converter serves to receive Digital TV signal on your analog TV, with the Analog Pass Trough is possible to watch both the Analog and the digital TV signals. Remember that all TV networks will shut down their analog signal on February 17, 2009 to only broadcast all signals on digital. That's why I don't think it is necesary to have that feature on the converter, unless I become big fan of those Low powered TV stations that won't be affected by the analog shutdown.