Hello, I have a macbook and will be upgrading to a macbook pro in the next couple of weeks. As part of that upgrade, I'm getting an external monitor. I got a great deal on the U3011 ($1125) which makes it a $25 difference between the 27" with Apple care (or $175 on refurbished 27"). Dell already has a 3 year warranty. I don't mind the matte option because my last monitor was matte. I wish the Dell used LCD back lighting. On the macbook pro, I'm debating the glossy vs antiglare (a difference in sharpness and color favoring the glossy but not huge). I wanted to get some opinions from folks here who may have used both monitors. My main use is in editing photos and then general computer work with some minor video editing. The lighting in my office cannot be adjusted much. The glossy factor would be my biggest concern on a monitor of this size. On the laptop, it might not be so much of a concern. What have others experiences been with seeing both of these monitors? With the ACD, can you adjust RGB levels for calibration?