The iView 3500STB is (essentially) a clone of the Homeworx 150. I'm pretty sure all the STB's mentioned in this thread output HD. At the very least, I know the iView can.
While the iView maybe a clone of the mediasonic homeworx150, I heard better things about the mediasonic unit and that is why I bought that one.
Also for the price (less than $40) for tone unit, it sure beats out the others costing well over $100
Either way a true HD reception unit is the way to go instead of those cheap RCA or Colby brand STB,s
Bought the Mediasonic Homeworx150 box
Works very well and has true HD reception not like those other STB,s that are just SD
Most of the early Digital tuners were only meant to give people with older analog TV's a way to receive HDTV on the SD Tube.
Glad you found one that works for you...the Channelmaster I listed was for reference only, plus CM tends to make decent stuff, personally I would have gone (and suggested) for the lower cost one too if I had know about it !