I've had great luck with the speck cases. I have used them on 3 macbook pros. (2 13" and 1 15"). They fit perfectly and i like the fact that they are very streamlined. I took my 2007 MBP 15" to the apple store about a month ago to have them run a stress test, and the apple genius was amazed at the condition of my computer; it looks brand new. I have the clear one, and the satin see-thru black. I like them both. It would be a personal preference. The cost $49.00 at the retail stores, but I have purchased all of mine on ebay ranging from $12.00-$35.00. I would also recommend getting the moshi keyboard cover, to offer complete cosmetic protection. They are $20.00. In addition the Iklear cleaner works great as well.