the motorola remote is designed for xbmc, it has a flip keyboard on the back which is awesome.
it has IR + RF, for IR it can learn your tv remote and you can push a button to toggle between RF (which is for xbmc) and IR.
it really is the best remote ive ever used with a media centre (ive used a lot). the keyboard comes in handy a lot too.
personally i would buy directly from pulse-eight.com, both mine arrived in about 4 working days using the cheapest shipping (around usd$8 i believe)
I already have the Harmony with the touch screen, and the girlfriend likes that it turns everything on for her, so I'll probably try to stick with that. That one looks pretty handy, but without remote support I might not bother with the Pi.
sure the harmony is nice, and the touch screen is a nice feature. but with CEC ideally you should be able to turn to switch the the pi and have your recevier etc all turn to the correct channel etc.
the selling points of the motorola remote is
- RF, so you can plug it into your pi, strap the pi to the back of the tv/receiver with no line of sight and use the remote
- Keyboard, it has a full keyboard so really helpful for searching movies/youtube, entering data in xbmc, passwords, smb shares etc.
- Designed for XBMC so no setup required, just plugin it in and youre off. (personally i customized a few buttons though)