Thanks for the Advice! I'll steer away from the Intel GPU's.
Concerning the Nvidia card... here's my dilemma. We theoretically could get an Nvidia GeForce GPU or something else designed more for gaming. A dedicated gaming platform would be the obvious choice. However, I'm not a gamer, and thus don't necessarily need a dedicated gaming laptop.
I am a licensed pilot, but we just don't have the money for me to fly more than a few hours per month. So my end goal here is to practice certain things in a simulator world that would take too much time to practice in real life (for example, using an E6B on a long cross-country flight). I don't need the best in-game graphics for that; I just need to be able to see the panel gauges clearly, add some weather variation (no IFR stuff, more just wind, day/night, etc.), and see enough outside the cockpit to navigate effectively. And I need it all to run smoothly, which is borderline on my current system.
Even though the Quadro is designed more for workstation software, does it have the juice to at least run X-Plane in this regard? The specific laptop I'm looking at is the Thinkpad P40. It gives us the portability for the traveling that we do, the power for the music recording/editing that we do, and hopefully the GPU performance for lighter use of X-Plane. Thoughts?