I'm very happy with the quality of my S3 and I had no problems with my Cablecard install. The HD looks great and I'm happy to have it.
However, I find the "Search by Title" to be very slow. I timed it and it's 3 seconds for the screen to update after I select a letter. 3 seconds doesn't seem like a lot, I'll agree, but it's each and every letter. So if you are searching for, say "Studio 60" it's "scroll to S, click, wait 3 seconds, scroll to t, click, wait 3 seconds, scroll to u, click, wait 3 seconds". Shows that you find in one or two letters this is merely annoying but those that are deep into the alphabet are annoying enough to make you decide to give up and go schedule it from TiVos web site!
With all the negatives here, I hesitate to post this, because I truly like the box. This is my one annoyance. I hope it's on the list for improvement in a future update.