No love for Media Portal anymore?
I'm using Media Portal on both my media playing PCs:
Downstairs a cheap custom-built Athlon X2 with onboard Radeon graphics pulls media over a homeplug network from my main PC's storage drive. This is running Media Portal 0.9 (must update it one day...). It also uses the Firefox plugin for MP, which is cool.
Upstairs, my main PC is also connected to our bedroom TV through an extra-long HDMI cable. This is my main work/gaming PC (in sig) and uses Media Portal 1.1.2.
Each PC has a Microsoft MC remote and the downstairs one also has an IR keyboard. Overall, the set-up is one of the best things I ever did PC-wise. Unlike the rest of my PC hobby, my wife and kids love it as well!
I'm a big fan of Media Portal because of its flexibility. It's so easy to configure and edit metadata. I have hundreds of Asian and European films that just aren't scraped well by any of the Media Centre add-ons or XBMC. The Moving Pictures plugin for MP does a much better job, and it's a cinch to edit or add any metadata and covers that aren't scraped automatically.
The MP-TV series plugin is great, too, with its options for displaying fan art or official art in different ways (though I miss the long banner view they had in earlier versions).
With the Streamed-MP skin, Media Portal to my mind looks every bit as good as XBMC anyway, and although it is missing some of the nifty features and sleek interface of 7MC, because of the ease of setup (editing/scraping options, display options, easy to send to a 2nd display, easy set up of codecs for different players, etc.) I find it suits my needs better.