Bob, you do realize that the TTS voices in the K2 sound noting like what is in the Amazon example video they posted a while back? It's actually quite good. At least on par with anything I've heard using programs like Dragoon, etc, before. It is not mechanical sounding like that advanced video showed at all.
I can listen to eBooks with no problem at all using the new TTS feature on the K2. Other then some proper nouns not being necessarily pronounced correctly, it's actually pretty nice. I don't use it very much preferring like most to read my books instead, but I certainly don't hesitate to use it due to the quality of the voice. Just my $0.02.