I ended up ordering the stand I posted in the picture above. It says it's rated to 40lbs and my Sony weighs like 43 without it's base, so I'm going to live on the edge and give it a shot. I figure the speaker sitting on the bottom should give it some extra ballast. I guess we'll see what happens!
Incidentally what you mentione din that post of yours you linked is exactly whay I was trying to avoid above television mounting options. Everything I've ever read indicates the front tweeters should be in as straight a line as possible at ear level, or it makes the sound appear to come from above the screen.
