Samsung SIR-T451 High Definition Terrestrial Tuner
Adequate service.  Nothing particularly special.
This receiver provides all the necessary functions to receive HDTV signals.  The picture quality is very good.  Plenty of output jacks including DVI and optical audio. Channel scanning is reasonably quick. The unit is light and compact fitting easily within anyones home entertainment system.  One irritating point is the full program guide (EPG).  The unit doesn't seem capable of processing program data in the background while you're watching TV.  It seems like every time I press the guide button I have to wait several seconds to a minute for the unit to gather all the data.  Of course, you can't do anything else except quit the guide until the data is gathered.  I don't have experience with any other HDTV receiver of recent vintage so maybe they're all like this. Anyway, with the delay, the EPG feature is near worthless to me.    Oh yeah, the zoom still doesn't work.    Update 7/05/05  I have also purchased the Humax HFA 100.  The difference is dramatic. The EPG works really good and fast.  By the time I had the receiver setup and channels scanned, I had a functional EPG and the data is instantly there whenever I want it.  The channels change and lockin faster.  I'd say the Humax has a newer faster processor than the Samsung.  In fact, the only reason to buy the Samsung is if you want DVI output.  The Humax has HDMI instead.  Of course they both have all the necessary alternative outputs.    And the Zoom works fine on the Humax.