So, if you are going to keep it for several years, the Envy would give you an upgrade path to OS/app SSD and storage HDD, though it has no option for sufficiently large (60GB) SSD out of the box.
That's a good point actually. However, the whole back panel of ultrabooks nowadays is one piece so to get to the msata or hard drive you have to open the whole panel up. Has anyone had any experience doing this/is it hard to change? Will this void the warranty? Could I even replace the whole hard drive down the line?
that one is mostly good for when Intel drivers aren't up to snuff. So, on the bright side, for making the choice, I think you can safely ignore the GPU in making the decision.
What do you mean by that?