OK, assuming they all play AVI's by front usb port, I would ask which one does the best upscaling of standard DVD's ? I don't stream as my dsl is too slow, so that's a non issue for me. I just don't want to have to replace all my regular dvds.
Most of the reviews I've read raved about the upscaling on DVDs and NetFlix content. That was pretty much the same across the board on the Sammys. From the most expensive to the cheapest. I only have experience with the C5500s, but I need another one and I'm trying to decide between the D5500 and the D5700.
Apparently, they all use the same remote, so buying a newer model doesn't resolve those issues.
If I didn't have a NetFlix sub, I'd be happy with a Panasonic. They seem to upscale standard DVDs as well as the Sammys do, it's in the NetFlix content that you really see the upscaling difference. The remote on the Pannys is a bit of a PITA, too. Not nearly as bad as the Sammy remote, tho.