Oddly (apparently), I found KDE 4.0.x to be quite stable. For me, its problem was that there wasn't anything implemented other than some "shiny bubble icon" eye-candy. It's not really "polish" that KDE4 needs - it's had THAT from the start. It's actual functionality that it has really been needing.

I've been using the current SVN builds for the 4.1 series, and it's looking much better in terms of actual functionality than the 4.0 series was. There are still a few irritating missing bits (like metadata display [duration/bitrate/etc. for mp3 and ogg-vorbis files, for example] and a fully working version of K3B for KDE4, etc.) but from my perspective they've done a very credible job of addressing many of the major shortcomings from the original KDE4(.0) releases.

I think the whole "plasmoids" thing that they've been frantically laying the groundwork for will probably make dealing with the remaining missing functionality pretty quick.

When I think of satellite radio, I think of this:
*Major genres unrepresented.
*Station playlists that would become predictable within a week.
*Sub-genres within all genres utterly unrepresented in general (for example, one Metal station on all of Sirius, and it only plays death metal).
*A whole slew of stations essentially devoted to playing the exact same stuff that you hear on standard Top 40 radio.
*Commercials, despite being advertised as commercial-free.
*Annoying DJs (the receivers display the name/artist playing, you do NOT need DJs trying to be funny between every song).
*Oh, and a monthly fee on top of that.

Frankly, satellite radio was created 10 years too late. Why should I put up with satellite radio when I can use my mp3 player?