E5 for me. I soak and squeeze the crap out of the teebag.
A tip for everyone to get stronger tee. Put the teebag in a quarter cup of boiled water, then boil it in the microwave for 30 seconds, then add the rest of the water. It releases all the favour in the bag.
Another vote for nextcloud.
Or synchthing if you want something that is serverless, but does not support sync on demand.