If I get a Dell I'd have to opt for a Hackintosh. There are just too many little things in MacOS that I find are important to me and they're really difficult to replicate across in GNU/nix.
The one thing to consider (I am sure you do) is just what kind of non-Apple-hardware you could get for the same amount of money you are willing to spend. The difference is the entrance fee for Mac software. I am not a Mac user, but both Linux desktop and Linux-on-Windows got quite mature in the last years
Apple has really messed up the computer industry by selling a computer to 5% of users but 95% of developers at funded companies.
If developers were synced up with users we'd see more native desktop apps. As it is, anyone who gets venture funding is making crappy electron apps and wondering why people are using phones instead.
Apple is laughing all the way to the bank.