I also like the Cambridge SoundWorks Model 12. The sub woofer/case is brilliant. I keep waiting for something more modern to take it's place but nothing else is getting it right. The perfect travel kit would have the bass/case with powered speakers and a controller/gain optimized for an Iphone or like source. They should build the controller right into the case and provide a remote.
The only thing I don't like about this set up is having to plug in the speakers.
The only thing I don't like about this set up is having to plug in the speakers.