- Microsoft is very convenient but very slow with updates and has no quality control.
- Orbx, Aerosoft, Flightsim.com and JustFlight only have limited number of developers they sell from. Quality control is mostly good though. Orbx and Aerosoft also have apps that keep your products up to date.
- Simmarket has by far the largest portfolio, but has absolutely no quality control and often is more expensive than others.