I am leaning toward a 13" and then getting an external monitor however I have some questions. I currently have a several year old Windows laptop and have never used Retina other than in the store for a few minutes. I do a lot of reading on my laptop. I have heard that after using it for a little while I will be amazed at how good the retina screen makes things look. However spending another $500 on the 15" seems counter productive if I can get an external monitor that is 24" I have seen people post a number of options including the Dell Sharp display I think or something like that, as well as others. Is there anything out there that is comparable in quality to the Retina display on the MBP other than the $949 Apple display? Also I have seen some thoughts that 24" displays that only cost $300-400 are not good quality and are made from LCDs that are rejected for the higher cost displays. I am coming from a 15" laptop now. I don't want to get the 13" and then be mad that it is to small, however I have seen TONS of people say they like them and that you can increase the size of everything on the screen easily.