As an older guy who has received an Unltrabook recently, and trying do do production work instead of consuming media, I had some issues. Installing older paralell port printers attached to my LAN via Trendnet or other devices proved to be very difficult. Visiting the manufacture of the printers for updated drivers was a total failure. As mentioned, there is a learning curve. To get the drivers, you have to use Windows Update instead. Trying to sort a list of files proved difficut too. A long list has the traditional scroll bars on the right just where you expect them. Dragging the bar does scroll the list, but at the top and bottom are the two buttons which also used to scroll the list without dragging, usefull if you only want to scroll small distances in a long list. Unfortunately in Windows 8 they are only decorations with no function. You either need a touch screen to scroll the list, or highlight a file and arrow up/down through the list, which defeats picking multiple files for copy by Control Click. A small wiggle on a extended list can scroll it by several hundred items making picking files difficult.
Maybe there is a trick to this I haven't learned other than drag drop each by itself..
The touch screen is not the preferred method of picking files from a list. My fingers are about 5 lines tall. A mouse is a much better and precise way to do fine motor skills. Photo editing suffers the interface issue too.
I tried to burn some CD's from a band I recorded. Windows 8 had a serious issue with my external USB DVD drive. Using Windows Media Player had no problem burning ONE disk. The media player on the left side properly identified if the drive contained a music CD, Data CD, or Blank CD. The information IS NOT passed to the right side which stubbornly recommended I insert a Blank CD before I could burn another. I went back to a Windows 7 machine which did properly recognise blank disks in the right side. Too bad they didn't keep Windows 7 functionality in the Window 8 Media Player.
In a nutshell, don't ditch your other machines when you get a Windows 8 machine. You may need the older machines to do older tech stuff like burning CD's, sorting photos, editing audio tracks, editing photos, etc. The Windows 8 machine is a great Facebook, Skype, social media and connected machine, but for production, keep your other hardware.