Aeronautical Sectional Charts. Global AIS.
Superoverlay 1.5 Pro support large datasets. We can uses Scheduler and distributed Superoverlay projects.
Matt Fox aka Forkboy2 generate great dataset
About 40,000 tiles all together.
Post about this see in Topographic Map Archive
From my archives:
I have experience with generation of Airspace datasets for Global AIS
My post in forum.
Global AIS KML Download
Jeffrey Johnson also compare vector and raster datasets near LAX (Los Angeles international airport). Very nice results!