We are currently paying for the IDrive service. Previously we had very few problems with this service, when it only backed up from a desktop computer (desktop server). Since migrating to a Synology NAS (no complaints about the NAS, wish I would have switched long ago), my backup to IDrive is practically useless. I have finally gotten the IDrive APP and my router dialed in (QoS and bandwidth restriction) to the point where it will not kill my connection, but I am limited to 300K upload.
With my current internet access plan I have a 3mb upload and 25mb download and the most I can get out of this app is 300k. I am testing other services.