I have purchased several version of MS Flight Simulator through the years
and I still do not like it. However, I have found OnTop version 8 from ASA
to be a great IFR trainer. Don't expect great graphics out the window
because it's an IFR trainer. But the panel graphics are great and you can
configure the panel in many different ways for a variety of aircraft. It
has all the VORs, NDBs, airports, etc. It flies like a real airplane.