I've found pCloud to do just that, focus on sync, encryption, security and performance (consistent ~10MB/s up/down for me). They even do automatic backups of o

I've found pCloud to do just that, focus on sync, encryption, security and performance (consistent ~10MB/s up/down for me). They even do automatic backups of other cloud providers like OneDrive, Dropbox, Facebook, Instagram and Google Drive. Lately there's a plugin to backup an entire Wordpress site, directly to pCloud.