Bought ProatcX 3 days ago, I was also ATC-less and was getting board of erroneous fsx atc approaces and annoying voice. So far I can say that I am really pleased with proatc, the background atc chatter really gives it a whole new level or realism. appraches are dead on, and the voice is miles better than fsx. very easy to set up, and it also has a flight planner which is a plus. Have tried voxatc but really didnt like the interface, plus is didnt have a flight planner.
forgot to mention that it automatically imports the flight plan into fms, also a lovely feature is the copilot and checklists and the heading assisted guidance to runways and gates...simply love it