E10 Options for running MES client

Or a third option ...  Have the XP stations use Remote desktop to a client server.

Or a 4th, use web App publishing on the Client server.

Has anyone run an E10 MES client over Epicor Web Access on a Windows XP machine?  We have several XP machines currently running E9 MES and are trying to evaluate the options of 1) replacing the machines, 2) updating the current machines with Windows 7 or 3) leaving machines with XP and running MES over Epicor Web Access.