You and your friend are far too easy to please.
Nah, you're looking at it the wrong way.
This is the time to be excited. Try taking a positive outlook on this. Astropad doesn't work for you? Then there are a bunch of other tools that should meet your needs. Rejoice, man. The choices you have are immense.
Expensive, but immense.
As for my friend being too easy to please, he has a couple criteria - (1) can he position it to be comfortable no matter where he is drawing and (2) can he get paid for the work he produces on it. iPad Pro meets both for him.
For me, it's entirely a "free time" device. I don't make money drawing. So the fact that it's also an iPad with all the great entertainment apps is a plus.
BTW, I found AstroPad pretty worthless.
This seems like hyperbole. I'm sure you could get work done on it if push came to shove.
Particularly with Adobe Illustrator.
This seems like the most likely source of your feeling of Astropad being worthless. What specifically gave you issues? Was it point selection and bezier manipulation for fine tuning of paths?
I may still be searching after the Surface Studio, but it seems to be getting close now. We will see.
Seriously look at the new
Wacom Mobile Studio Pro. They aren't cheap, but everything I'm seeing is looking great. The parallax is way down. The displays support wide color gamut, and are very hi-res (13 inch is 2560x1440, 16 inch is 4k). The pen is significantly more sensitive and battery free.
It is supposedly lag free, or closer to it than both the iPad pro (minimal lag) and the surface (slowest of the three big players)
Early impressions say it doesn't have the wobble associated with surface tablets when drawing slowly, and it doesn't have the odd taper errors like the surface when drawing strokes quickly. If you need it, you can get it with a quadro, thus making it supported by everything from Photoshop to zBrush to Autodesk Maya and Max.
And if that isn't the kicker, it has "wacom link" to attach it to a more powerful computer. It can act as a tablet only and use the desktop to drive everything, and it can be a completely self contained portable computer running full windows 10.
If that doesn't meet your needs, I don't know what will!