I wonder if the sound as it focuses out into the room isn't better than what you hear sitting right on top of it? I'm on my third one and always had them for portability and durability more than sound quality. But I keep coming back to them because every time I hear someone else using one I think "hey, that sounds pretty good!".
They do sound pretty good, although I think their voicing and e.q. work better for electric bass than for upright. A GK is a very good choice for situations where portability is absolutely paramount--like the original poster on the subway. Lots of great players still use them. The design has surely stood the test of time. These things have been around for...what, 30+ years? I've had the same 200MB for more than 20 years and it's been bulletproof.
But these days there are many small, lightweight amplification options, some of which sound better to my ears and don't cost much more than a GK.
