I use a laptop in my one-man computer repair business for the following: QuickBooks Chrome Postbox for Gmail Evernote Preview Acorn (image editing) TeamViewer for client remote access configuring routers onsite My laptop needs are light. I want a system I do not have to tweak, that I can just use and not think about. Mac OS X fits that bill perfectly. It looks like it's a lot more efficient than Windows is: Mac OS X Lion runs cooler on my MacBook (2007) than Vista or 7 would on the same hardware. That's what got me interested in the first place. Also the keyboard is much better. For a long time, I've been obsessive about tweaking and experimenting; that's how I learn Windows. I have a Windows 10 Pro desktop for NTFS hard drive recovery and other Windows utilities, so I'm covered and I can tweak there if need be. I usually purchase or recondition used laptops; I don't buy new. I'm currently looking at 13 inch 2012 MacBook Pro because that is the last year Mac laptops can be upgraded easily. Is this too old for long term use? If I have to buy newer based on your recommendations, I will. MacBook Air is another option, but thinness/lightness is not a major consideration. I've seen that Mac OS is on the back burner for development, and it doesn't have as many features as Windows 10. That's a plus for me; the hardware will last longer on a Mac because it's not stressed as much, and is the main reason I'm thinking Mac, and not Microsoft. I'm also not going to be running the newest version of Mac OS; I can monitor developments in the software space and can upgrade accordingly. I don't want to have to buy a $1000 computer just so it can last 6 or 7 years. I don't have the money for that and AppleCare. If I can fix it myself, so much the better. Thank you for any insights.