Backblaze a little restrictive if you need to restore data.
"When restoring files, Backblaze limits each download to 1 gigabyte at a time. Or the company says it will overnight a DVD with 4 gigabytes for $100, or a USB hard drive with all the files for about twice that."
May I ask where you got this info? I use backblaze and I can download way more than 1 gigabyte at a time.