The cheapest one - European skybus. Why? The MCC is a given, it's something you do, not pass or fail. You pay massively over the odds to go to Oxford and their MCC sim is a pile of
despite what the dreamers might say. It's very much a pretend. Plus it would be nice to put money in the direction of a company that probably needs it right now. Finally European have some different simulators whcih will probably be the only time you get to fly something like that - One Eleven, 747 Classic, 727 and 737-200 - Sweet.