I've tried syncthing as well as btsync (now called resilio); it's not just less user-friendly. It tends to be _much_ slower and eat tons of CPU due to a differ

I've tried syncthing as well as btsync (now called resilio); it's not just less user-friendly. It tends to be _much_ slower and eat tons of CPU due to a different algorithm. Resilio has a free tier that works fine for me, and I don't have an inherent issue with a proprietary program that works well. It's a very convenient solution, I haven't had issues, and highly recommend it.