But, it can require lots of hard drive space. I have about 10 TB of ortho right now, I have finished the entire US, all of Western Europe, most of Australia, and all of South Africa. But I use a lot of ZL15/16 in order to accomplish that. If trying to do only higher zoom levels you will be looking at significantly less area for the same amount of storage space (maybe 'only' the US at ZL17). SeaTraffic - free, equivalent to Global AI ship traffic, not as good though Landing Speed Plugin - free, rates your landings by fpm at touchdown, really neat.