The answer for me would definetly be 'research online'. Having gone through the process myself after plastering cables etc for my new LCD i would suggest looking for the type of bracket which enables you to keep the LCD as close to the wall as possible, some stick out and reveal the bracket and cables etc from a side view. In my case i wanted a 'fixed bracket' so this was even more important. Try amazon and ebay, make sure they match your LCD and that your wall and fixings are strong enough.
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