Instead of the R-Pi get the SolidRun
CuBox-i2 (dual) or i4 (quad CPU), they are like the R-Pi only much better out of the box.
* Much faster hardware capable of rendering XBMC at a solid 60fps at 1080p
* More capable video core with hardware decoding for a wider range of media including 3D Blu-ray though XBMC itself does not yet support that via hardware.
* Dolby/DTS bit-streaming and TrueHD/DTS-MA is currently being worked on.
The Cubox-i 2/4 has an IR receiver which will work with any harmony or MCE style remote, it also has HDMI-CEC working out of the box along with optical SPDIF output. No case needed either on the CuBox-i.
Basically the thing is better than the R-Pi in about every possible way, SolidRun do a R-Pi form factor clone called the HummingBird this only gets the hardware from the i2 model no quad core CPU like on the i4 and it gets the optical SPDIF swapped for a coax SPDIF output.
I've been using the Openelec 14 alpha
on it and it's amazingly stable for alpha software. That's the one knock against is that the software is alpha but it's a much better platform to buy into.
XBMC distros Openelec, GeeXbox and OSMC (successor to Raspbmc) all support it.