I've owned big-box RPTV's since 2004, which generally have plenty of room for decent speakers. I have NEVER heard the TV's speakers in the last two RPTV's I have owned. When I put together my current setup, it would have been a mid-range audiophile setup, but I'm guessing it is considered a top-tier system now with most folks wanting to budget less than $1000 for " surround sound. "
I actually have two setups... a 11.2 setup for movies and a 2.1 setup for high-fidelity music. Some of the best recordings I have are actually 24/192 stereo " rips " of vinyl recordings. Most of the surround stuff I have are live classical recordings, like the Christian Thielemann/Wiener Philmoniker Beethoven 9 collection, which is more of a video presentation than an audio presentation. I'm still hoping for BD Audio to take off.