RCA from Walmart...
The sole reason I picked this up was the buttons on the front. It does very well (better than I expected) with picking up OTA signals during poor weather. Where my HD receiver will drop signal, the RCA was able to hold its signal a little better. But this was my intention, get this for camping/bad weather for the small portable TV so I don't have to rely on finding the remote when switching channels.
Now the downsides (IMO):
No EPG button. In fact, it displays on screen the next show, but you can't see passed the current and next show being broadcast. Even being able to see the next two to three shows would have been a plus. To access the EPG, you need to go into the menu and take option 1. Not difficult, but not my preferred way of doing things.
No cables. I honestly would not even call what it came with a coax cable. (thankfully I have plenty of composite cables lying around). You'd think a RCA receiver would come with RCA cables.
Lock-ups. I have locked it up a couple of times, and I think I have it narrowed down to when the OTA signal drops. Had to unplug it to get the unit working again. Not a deal breaker, but not a plus either.
Price. For $50 I think it's a big too much. Even though I used the coupon and paid $10 for it, I think $40 is a more appropriate price.
In a nutshell, this is the perfect unit for what I intended to use it for. As a primary source for OTA digital (after Feb. 2009), I would want more...or at least some way to upgrade the software should an update be made.