Though I probably will not use it much, I want an external optical drive to import CDs to iTunes, burn DVDs (Blu-Rays???) of home movies and from time to time burn photos and music to disk. It will not be used to watch movies. Any good recs? Should I buy a blu-ray drive? Read about a good Samsung Blu-ray drive for around $80 but then there are also some good non Blu-ray drives for quite a bit less. Thanks!