Summary: Overall I liked it until it died after about a year of use. I got a system 1 error and from research on the net it appears there is no fix, it's dead. These remotes are too expensive to die after a year.
Summary: I found it to be OK but nothing really special. After 30 months of very light use the glow light quit working and it started eating batteries. NiMH rechargeables would last less than 24 hours and Duracell Alkaline batteries last only one week. Logitech says the model is discontinued and beyond the 12 month warranty so there is nothing they can do. They did offer to sell me a 670 for $75.
Summary: I had been a fan of these Logitech Harmony Universal remotes for the past couple years now, but I hate to say that I'm finished with them. I've been through three in that time, for a total of $370, this model 676 being the last. When they work, they are wonderful. But each of mine only worked for a few months, then, I guess the buttons wear out. I am the only one who uses it so it's not as if it's gotten extraordinary use.
Summary: I bought this remote from Amazon and went through the easy programing. If you are concerned about setting up a remote, don't be, it was easier than anything I have seen. Installed the software via the supplied disk and let it do the automatic upgrade from Logitech website. I put in all my model #'s and only one of the "Activity" buttons worked. The "OFF" button doesn't work and neither does the "HELP" button to try to troubleshoot what the problem is.
Summary: I loved this remote until the most used buttons stopped working after about a year and a half. Since it is out of warranty is basically now a paper weight. At first I would have given this unit 5 stars, now I will only give it one star.
Summary: I've had the remote for at least two years. A year ago I would have given this 5 stars, but not now. The mechanical button design is poor and it won't last long. Several of the most used buttons have stopped functioning. It's out of warranty and it's going in the trash.
Summary: I'd so much love to give this remote a 5 star rating, but... The remote itself is awesome. Easy to use, simple, very flexible. However, the setup is the worst I've seen for any device remote or otherwize. It's only done via a web site that uses an intermediate communication drive to talk to the remote. While I don't mind the idea of a web base setup, their's is just terrible. It's slow, tedious and makes changes a thing I try very very hard to avoid.