No, you can't. What you can do is read as much as possible, and make a guess. Most of what you have read will probably have been indirectly sponsored by the ma

No, you can't. What you can do is read as much as possible, and make a guess. Most of what you have read will probably have been indirectly sponsored by the manufacturer, or one of its competitors. None of it will be rigorous - in fact, the most honest information you get will be anecdotes from people whose purchases have failed, and who are as likely as not outliers.