I love my Squeezeboxes. Truely the future of how we will interact with music. I control both of mine with a laptop and it works well, but I would love to try one of the new controllers.
Unfortunately, I really hate trying to load up proper cover art. I use Itunes to manage my music library, but the covers for lots of my CDs just aren't available from the Itunes database. Moreover, the covers used by Itunes are stored in a special Itunes file and must be added to the music files for use by SlimServer. I use Coverscout for this, but i think it stinks. Sometimes it works, sometimes it doesn't and sometimes it corrupts my music library.
I can't wait for a truely complete (i.e. cover art, liner notes, lyrics, links) database for music is available and usable by our home music servers. Now that will be priceless!