Ah, those great promedia 2.1 speakers. Just spent the last week on the phone with Klipsch about them:
1. They are still being produced and shipped. Klipsch is getting a whole new shipment this month (11/2008)
2. There are few sales outlets as there have been problems with some of the retailers (e.g. Best Buy) You should buy directly from Klipsch online.
3. The speakers are amazing for the price. I've had them for years and use them for various things such as presentations, video editing etc.
4. They have drawbacks: a) The connector in the back is fragile. b) The controller in the amplifier goes bad on certain sets. All of this is covered by the warranty (Klipsch is great with that stuff) but outside retailers are not so forthcoming.
The M-Audios are fine, but more of a low-powered ref monitor. The promedias have way more possibilities but also can function adequately as refs when you turn down the whopping subwoofer. Anything better than the promedias will be about 3x the price.