Lite-On makes a high quality drive. CMC Magnetics, on the other hand, is known as one of the worst producers of CD-Rs. I suggest using Fuji CD-Rs if you are in the US. Fujis are made by Taiyo Yuden, one of the best (if not the best) CD-R manufacturers available. You can get Fuji media at Best Buy and CompUSA for a very reasonable price.
As you have found, it is very important to use high quality media.