Jottacloud is a Norway based Dropbox clone. Their datacentres are powered by green energy and their Pro account offers unlimited storage across unlimited devices for $9,90/month (even cheaper than Dropbox's new lower prices). To be honest, it was a bit glitchy with regards sync-ing, when I first signed up about a year ago, but it's come on in leaps and bounds since and is now pretty much as seamless as Dropbox for me. Usual referrer link below gets us both some extra GB, when you sign up for the free account:
http://www.jottacloud.com/signup?referer=2166DD2B220919EFE10...