[Veratyr]

And I can recommend against it.

I attempted to use them for a while but found the upload speeds of their (proprietary and closed) clients to be utterly useless for anything more than a trivial amount of data.

Everything I found pointed to it being a client issue (the client was simply not uploading 90% of the time and my PC was more than capable of performing the required encryption and hashing operations far faster than my network connection could accept the bits) so I opened a ticket and talked to their support for over 6 months (!!!) and in the end they decided to just refund my money.

If you have a trivial amount of data, go ahead and use the $7, 30GB plan but don't fall for their 1TB plan, there's no way you can get close to using it.