Ah, the retail BenQ model, that's my choice.
The Plextor's auto-strategy technology gets automatically off-the-beam and stuck that way.
The BenQ is a better value and troubles, if any, can be undone with a quick firmware flash. If it acts nuts (very rare), just flash it again with the same firmware.
The value of the retail box is usually overlooked. It's an optical drive, and that box will protect it from rough shipping on its trip halfway across the earth. It also comes with an 80 wire cable, extra ease of updating, better support and some other goodies. In the long run you will see no noticable difference between the cost of the retail or generic models (when buying for personal use). But your odds of satisfaction are greater with the retail product because you're not paying for a single thing that you don't need.