Personally I was a Spideroak customer for 2 years or so and moved to Tresorit after the canary thing. They offer very similar features but their apps are a lot better. Spideroak always felt quite clunky. Also, the servers are based in Europe.
I don't think either is great to use with lots of data as upload and download seem quite slow, but for my use case of just storing documents it is fine.
I don't think either is great to use with lots of data as upload and download seem quite slow, but for my use case of just storing documents it is fine.