I've been using UpdraftPlus for a while and it keeps getting better and better all the time. I backup most WP dbs using Navicat but some (mostly from a well-known unnamed site hosting company) are flaky and unreliable. UpdraftPlus backs them all up with no problem. Some go to the server, some FTP to another server, some to Dropbox. And the Migrate add-on is BEAUTIFUL for cloning a site. Works like a charm...plus you buy it once and use it forever!