Warren -
I can't say I've purchased either. While I like the wiz bang nature of this new stuff, I couldn't justify buying it as I could with the original Sling Box.
To recap, the original Sling Box is attached to your TV or DVR (like a TIVO) and to a fast internet connection. You download the free Sling software to any PC or MAC and you can connect to your TV or DVR from anywhere in the world to watch local TV real time or anything you've previously recorded. And, anyone with the right password can access your TV with the free software on their computer - one user at a time. This is legal and known as place shifting whereas a DVR can legally time shift. I know a couple of kids away at college who use Sling media software.
The Sling Box PRO-HD adds the capability of high definition to the mix.
As I understand the Sling Catcher, it is a box that interfaces between a TV and either a Sling Box, or a computer hard drive, or a computer with an internet connection. With it you can watch video you capture on the Sling Box or recorded on the hard drive or can stream on the computer.
I have Apple TV which plays all the stuff off my Mac to either my hi def TV or through my projector to a screen. I use it infrequently so I don't think I'll be buying the Sling Catcher.
Six months since I posted on this topic and I'm still waiting for the next big release from Sling, the iPhone app.
I think I read a beta version is still a few months away. ( Last June Engadget had a video clip of a Sling Media engineer demonstrating Sling Media capabilities on an iPhone. Here's the clip:
http://www.engadget.com/2008/06/08/slin ... or-iphone/ ) When released you'll be able to watch on an iPhone the Seahawks while stuck in the woods during a snow storm - provided you're connected to the ATT 3G network. All very cool. :smiled
I hope this clears things up. If I missed something or there are other Sling Media users in our group I'd welcome their input.
Phil