I opine that it's better to treat your room acoustically and/or work with speaker placement if you have weird nodes or reflections/anomalies and what not.
I’ve always suspected that the main reason I hear no improvement and sometimes poorer performance when using Audyssey is that I have never had and speaker placement constraints. In every room I’ve used, though not perfect, I’ve been able to play with speaker/seating placement to get everything dialed in. Plus my curtains double as room treatments for the mid and high frequencies. The only thing I’ve had problems dealing with is 200Hz and lower, and I agree at this point I would need professional help with that.
