Installed fine here, Space problem is getting close here (allocated 100gb for this install), but, after doing WIndows Cleanup after the install, that freed up another 18.9gb (dam !).
The start menu is much better as I requested (a few reports I put in for this), When you go into the start menu, click a letter, it will bring it all up, select the letter and hop right to that spot, Just like in Windows Phone.
Very quick to find stuff in Windows 10, way better. This is a major improvement over even how Windows 8.1 does apps.