We've ran into the same issue.
The BenQ simply does NOT burn -R absolutely correctly. Something is different about the way it does it. It doesn't bother most DVD players, but it does some and it really seems to bother game consoles.
A friend of mine also has a Toshiba setop DVD player that absolutely refuses to play -Rs from the BenQ.
Usually the answer is simple - use +R discs. The BenQ sets the book type to DVD-ROM by default which increases the +R compatability.
This worked for my friend with the Toshiba.
Our game console unfotunately doesn't like +Rs and our BenQ -R burns rarely boot, so we just use our old LiteOn to make console burns.
Hope that helps, sorry it's not better news!