I have a Lite-On SOHW-832S DVD/CD burner. I think the manufacturer says it will last about 70,000 hours. From you guys own experience, roughly how long have your burners lasted before giving out and needing to replace? Either in time such as months/years or number of rips/burns. Also, does burning cause more wear and tear on a drive than ripping or about the same? Or does simply opening and closing the drive do the most damage?