HUMAX Digital ATSC TV Tuner for HDTV Reception
Good stuff!
I have both the Humax HFA100 and the Samsung SIR-T451.  The Humax wins hands down.  The Humax has a fast and useable EPG whereas the Samsung EPG is nearly worthless.  The only reason to buy the Samsung over the Humax is if you need a DVI output instead of HDMI which the Humax has.  The Humax seems to have a faster processor.  At this price point these two models compete head to head.  The Humax is better and slighly cheaper.  Read my review over at the Samsung SIR-T451 for more info on both.