From my experience, LPCM/TrueHD/DTSHDMA always had a fuller sound to it, but you actually have to really pay attention to the audio to notice. If you are more focused on the movie and storyline, then most likely it doesn't make that much of a difference.
I just finished this article man, I do not have any plans to look at the Yamaha or HT-CT150 quite yet
I have to agree on your review of the Boston Acoustics TVee Model 20.I have one connected to my Tv in the bedroom because the dialog from the tv speakers sucked badly. I was very shocked how good the sound was.
Sounds great with music playing from my computer or watching movies from my Blu ray player. I am very happy with it.