RE: Bios bug: Latitude 7440
You are only right about with a Mac you cannot change anything but... It costs at least twice? You kidding? The same business laptop with Apple was cheaper than my E7440 with 8 GB of RAM, i7 and 256 GB SSD.
Three years of OS support? OS X El Capitan supports Macs from 2008, please get more informed next time.
Apple Care + is cheaper than Dell support. Anyway, this is a business laptop, not for a average customer and MacBook Pro is neither. This is my experience. No more Dell.