Why a Mac? Way more reliable and secure than Windows (which doesn't mean absolutely secure): so it's the OS, not the hardware. Unfortunately most people will realize this only after they have experienced some malware or ransomware.
The Macbook Air will work for 90% of people, even with its outdated display; preferably with 8GB RAM, when on sale.
The Macbook Pros are for people who can use the retina displays, such as photographers. The poor keyboard and lack of ports compatible with your current devices will slow you down, so it's more of a computer to consume media, not to produce media.
The Macbooks are a non starter: nice display, very thin, anemic processors, terrible keyboards.
The Mac everyone wants but Apple can't make: A Macbook Air with a retina display, thinner bezels, for less than extortionate prices.