System76 Oryx Pro - System76 Oryx Pro is a powerful and customizable laptop that comes with Linux pre-installed, but y can easily install Window and dual-boot if you want to use it for Windows development or gaming.
Razer Blade Pro - Razer Blade Pro is one of the most powerful and yet slimmest gaming laptop in the world that delivers an immersive experience in an incredibly thin form factor.
Microsoft Surface Book 2 (15-inch) - Microsoft Surface Book 2 (15-inch) is a laptop and tablet that can handle the modern PC games.
ZenBook Pro Duo - A new laptop from Asus with two 4k displays
Dell Precision 7730 - Very robust 17" workstation with flexible configuration options, the cheapest display is not recommended however. Read review here.
Surface Studio - A brilliant screen for your ideas, from Microsoft