I need to replace my remote, the buttons are sticking and last night my son "modified" it in a way that required duct tape to fix. As much as I like the 680, Logitech's support for the device is lacking; which makes getting another one somewhat painful . The activity based design of the remote makes it very easy for others to use, getting to far away from it will make SAF suffer, so whatever I get will need to have a similar function.
The recent deals for the 880 are very tempting, but I'm curious what others are using.
UPDATE:
Ended up grabbing a Harmony One. Thanks jakewill.