Kogren,
I'm surprised you have had bad results with the CM DVR+. My friend has one and he's had good results (ie same as his Samsung tv).
If you're going through a splitter make sure your cable lengths are the same, and your testing times are as close as possible too. With weak signals a few hours of time (changes in atmospheric conditions) or a few extra feet of cable (signal loss) can make a difference.
Mike
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