Thanks to those (Jukebox and others) who posted their opinions about my EX400. It's going back in exchange for a Samsung now. I wanted to keep it, but continue to have speaker issues. The sound is occasionally very distorted at times, even from Blu-Ray. I know I could add external speakers, but that would just be putting a band aid on the problem.
Not sure how the EX400 compares to the 700, but the quality control of the 400 just doesn't seem to be there. IMO, Sony has not maintained its quality like it did in the past. A real shame, since I've always loved Sony tv's.
Like it or not, Samsung here I come. Who knows...it may be even worse.