OK first I want to say hi because I am new. I am switching from a custom-built PC to my first Mac OS computer. I currently do not have a laptop and am going to be purchasing a single computer at a time. I am between the 15" rMBP and the 27" iMac for these reasons: 1. I am starting a new business so I will be doing some design-work, YouTube video's and my first web page. 2. I would like to take my work with me while I am at my "Paying" job so portability is a plus. 3. I am not sure that the 15" screen will get annoying when designing a web page, logo etc. If anyone has a suggestion I would totally appreciate it.