For info, you can fix the slow transmission on the 880, and the URCs won't sense that your TV is already on either.

Once set up properly, the 880 will work at least as well as the 850 or 900.

If you want to try persisting with the 880 a bit longer, I'll be happy to help you with the setup...just ask in the Harmony forum, I don't look in on this forum very often.