The aircraft are the heart of the sim. While the default Cessna 172 and Boeing 737 are decent, the freeware library offers a quantum leap in realism. When searching for , the aircraft category is arguably the most competitive.
Zero dollars. The cost is your hard drive space (50GB for a small region, 1TB for a country) and your patience (it takes time to render). But for those who do it right, X Plane 11 addons freeware reaches a peak that no other sim can match. x plane 11 addons freeware