[MeMeMe]

Junno, you would be lucky to find it for $99, but even with that it is not a complete solution. When you assign keys, don't you still have to change input?
I think my solution is going to be just setting WMC for recording, and watching everything from XBMC, if I really need to watch something on TV, I will just either watch it on WMC or try to just use guide to remind me and then use strm files to watch it on XBMC.

I always felt more comfortable being able to just remap buttons instead of relying on preprogrammed functionality that's locked in by manufacturer. I have to admit I did not try Harmony One, though.

The Logitech Harmony allows you to set up Activities, which control multiple devices.
So, you, say, select the "XBMC" activity, and it automatically switches on your TV, sets it to the right input, brings your PC out of standby, starts up XBMC (if not already running), and loads the keymaps on every button that XBMC needs. Then you load the WMC activity, and it shutds down XBMC (if set up that way), starts up WMC, and loads the WMC keybindings.

When you switch between activities, it keeps awake devices that are needed, and shuts down those that aren't nheeded any more. When you press the power off button on the report, it shuts everything down, puts them in standby, or leaves them on, depending on how you want each device to be treated. (When I was having resume-from-standby problems with my media centre, I set the remote to just leave the pc on all the time. The activity button just controlled which software was loaded or switched off)

Before using the QuickWMC program earlier in this thread, I had separate activities for XBMC, WMC, the TV's inbuilt tuner, and the Wii. I have now combined WMC and XBMC into one activity, and have another for loading Steam.