had I to do over again, I would have only bought 1 sling adapter. I bought two, so that the two 722's could be accessed without issue regardless of who needed it ... but now realize It was a waste of the second 99 dollars to get.
Had I the foreknowledge I might have gotten one of the HD sling boxes, or looked for other technology to supplement.
I think it comes down to what your intents are .. inside the house, with the sling adapter is acceptible for the most part, however, if the dish site goes off line, or something goes wrong with your internet, you're out of luck using it.. which is not that often in my house, but still something that might make me think twice about getting something that doesn't need external controls (all slings do ... and from what I've read the slingboxes require additional monthly fee to use with the sling app software)
SO ... 99 bucks now, inside the house is fine, if going outside the house ... I would put it down as a crap shoot. I have accessed my sling outside the house, and did not get good performance on even the "Better" setting let alone that I've never been able to run on the HD setting for anything.
Lastly.. the numbers dish posts on line, and the piece of paper that come with the Sling Adapter ... for lack of better words are just lies. In house, I've never streamed less than 6 to 7 megs average on the "Better" setting, where the website & slip of paper with the unit suggest 150k for "cell", 1.5 meg for SD (which I equate to the "Better" setting since it doesn't actually *say* its SD) and then it says 3meg for HD ...
I have monitored network traffic for inhouse streaming .. I have not monitored traffic for external streaming (*yet*) and probably wont get a chance to test/monitor for some time.. but when I do I'll post info on that.
in any case .. good luck!