Mirroring what I think most here have said, out of your options presented, the Dell #4 is likely your best option. Ok all-around specs, and the best processor compared to the others is where you’ll possibly notice the difference. Toughbook is kinda pointless unless you specifically want the hardened device, but given the other options, I don’t think you do. The Mac will be the most difficult on you. Once you get used to all their quirks and UI and whatnot, they’re not bad, actually have several features that Windows doesn’t. But I don’t find them to be user-friendly or intuitive at all. And, they’re generally about twice as much as a comparative Windows computer.
If you’re willing to go close to $1k, Sager is probably the best choice for a new laptop. They’re designed as gaming laptops, but they do all the basics just fine, and the gaming orientation means anything you end up wanting that’s somewhat gfx intensive will be easily handled.
It does look like the major consensus is for the Dell.
I will take this and other info into consideration.
I would like to thank all that contributed, and wish all a good evening. Morning comes early, and I have a full day ahead of me.
Good night, and may G_d bless us all.