It's unfair to mix B&W CDM1se or 805 Signature series with Logitech Z series in the same post.

Anyway, my computer rig includes Pure Digital's ZXR-200. Its a 2+1 system (it exists also the ZXR-500 in 5+1). I think it's a very smart buy, it's cheap and sounds good. Very good when it takes to compare them with computer speakers.
You can take a look at the specs in
Pure Digital web site.

The Home Theater setup includes the Mordaunt Short Premiere 5.1 system. The sound for the money is absolutely fabulous.

If you want to get more info take a look at
Mordaunt Short's web site