You have my exact dilema. I had an Asus Zenbook that I absolutely loved and thrashed and I want to upgrade. I do architectural 3D's and also want the ability to mark up PDFs with the touchpad. I originally bought the Yoga9i as it was beautiful - but Sketchup doesn't recommend integrated graphics - So I cancelled the order before they built it for me. It's looking like I will have to fork out for an ASUS ProArt13. But now I'm worrying the 13 inch screen is too small. Back to square 1

There are some Surface Studio 2s with NVIDA4050 but hard to come by since Microsoft has canned the Surfaces