Yes they are, and yes..... I agree with your assessment. The "room upgrade" is critical, and those who neglect the room itself are completely missing the boat. If more people were aware of the huge difference a "fixed room" can make, they'd quickly end days of living in ignorant 'bad sound' bliss and never look back
In my case, I lived in ignorant bliss for an entire decade before I finally understood and 'fixed' my HT room itself. Woah... what a difference a room can make!! Some of the responses in this thread are completely missing the boat, I think, because the responders themselves have yet to set sail.
The wakeup call has been delivered