I don't know about Magnavox and RCA but I
can tell you that if you're in a difficult reception area, the
dtv converter can make a difference. I have Apex, Tivax and Channel Master boxes in an area that has multiple reception issues. For all the good press the Tivax received, I expected better. Turns out the Channel Master is noticeably better at grabbing and holding signals, with far fewer dropouts,
and the picture is better. I'd like to pick up a few more but the few I've seen recently seem a little pricey, especially compared to the coupon price a few months ago.