On Amazon right now one can get a Series 3 for $399 after rebates. I assume that they are clearing out the 3 in favor of the HD. The HD is $269 or something. I was thinking that the HD would be reasonable just as an HD tuner, since the only other OTA digital tuner available is almost $200. I have had a Serie 2 since january hooked up to an 'HD ready' lcd set. A playstation 3 is hooked up to the single hdmi port on this Samsung unit. Good picture, but only an ntsc tuner. What does the Serie 3 offer over the HD? Is it more solidly built? As in, heavier? I like that.