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Title: 659 is good, 670 is better!
Review: I bought the 659 first as it had been recommended by a sound & video system installer. I then bought the 670 after looking into other models from Logitech. They both program easily with the included software and I had no problem getting them each to control a system with satellite TV tuner, A/V receiver, HD DVD, and VCR. The "soft" buttons may be programmed to do anything and you get to pick the label--but I had to find the command to change to all six buttons being usable. The "next" button lets you get to additional "pages" of soft buttons in a single mode while each mode has its own set of one or more pages. I like the button layout better on the 670, especially for DVRs. The 659 is more affordable and is capable of doing everything, however.
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