I was thinking the same thing. While the display on the M3800 is touch, I'm not sure if a stylus will be practical/possible (plus, I'll be downgrading to Win7, and I'm not sure how 7's support is for touch).
To your point about the trend toward 4K, it would surprise me if Adobe didn't get with the scaling program soon. If I can get anywhere near the lifespan out of the new Dell as I have with this HP, then 3200x1800 might be a good bet, counting on Adobe to catch up in the next year or two.
Thanks for the input!
Maybe I spring for the 3200x1800 display now, knowing I can add more RAM any time in the future. Adding more pixels, not so much...
I'd warn you away from Windows 7 if going high DPI. Windows 7 has the bare minimum support for it possible. Windows 8.1 Update 1 has VASTLY superior High DPI scaling and support. There is also little reason to not use Widnows 8.1 these days. You boot into the desktop by default, which is nearly identical to Windows 7 with a few minor tweaks here and there. The only major difference is the start menu has been replaced with the start screen, however you can get third-party utilities that restore the start menu as well.
Windows 8 boots in seconds, and overall uses far less memory and is generally much faster than Windows 7. It is also far more resource efficient, which increases battery life in a laptop compared to Windows 7. There is very, very little reason to downgrade, and so many reasons to stay with Windows 8. If you go with a 3200x1800, Win 8.1 is definitely the better option.
I just upgraded to 8.1, and shortly after reading Microsoft's support files about problems I was having with IE 11, I went back to windows 7. I'll give 8.2 a try to see if it fixes the issues. I like to put links to web sites on the desktop by dragging from IE, that does not work. Dragging them to the favorites bar in IS 11 also doesn't work.
That feature is something I use a lot. Microsoft says they are aware of the issue, but that's all.
Other than that, I found Windows 8 to be faster than Win 7, and generally a improvement. Its the details that get you. With Windows 9 said to be coming out next year, I wonder what we'll see.
I have a relative who is a manager at Microsoft, and he uses it because he has to, but also uses Start 8 like I did.
Windows 8 would not stop me from buying a Surface 3, I would not be using it as a primary machine.