Focusrite makes great stuff in the high end bracket. You gonna need to spend RME or Lynx money to attain that end of quality. Apollo on Win is a likely nightmare as others have said. How many i/o do you need? that is where you start RME drivers are awesome: turn the AI on after or before booting up. Total Mix takes some effort to comprehend. By no means was my UFX+ plug and play. Now that it is set up, tho, it works beautifully. Mid-grade? What's the budget? $1000US?