I new to the whole Linux approach for MC, but I'm really impressed with what you can do vs Microsoft MCE.
At this point I have two options: LinuxMCE or Pluto. Is one better and why?
I have used Pluto for quite some time and although LinuxMCE is using some of the yet to be released 18.104.22.168 packages to fix issues I dropped LinuxMCE and went back to Pluto because I have a dedicated hybrid handling Asterisk/MythTV/security/etc. and Pluto is much easier to get going from bare metal. Use the installation CDs and you have Pluto running system in a couple of hours (loading the DB takes some time). Pluto is based on Debian 3.0 so I do need to compile Myth myself right now to get a firewire input (needs newer 1394 packages) however I had to do the same on LinuxMCE so it was no big loss.
I like the effort with LinuxMCE however for those that are running a dedicated box it might be easier to just use Pluto at this point and avoid all of the steps involved in getting Kubuntu and LinuxMCE up and running.