Thinking about buying a new set of speakers for my sammy lcd tv.Currently using z623. Read a lot of reviews online and many seem to favor Audioengine A5. What i wanna know is how long lasting are these(many complain these have overheating issues and a relatively hiogh failure rate) Also i won;t be listening to music at all.These speakers are solely for movies(mostly action with lots of explosion and stuff) and gaming in that order.Will i see an improvement over the logitech z623s i currently own or will they be a step backwards ?---- less bass,etc etc