I spent roughly 8 hours on a saturday working (and re-working) Updraftplus. As a backup tool it's fine but as a cloning tool (excuse my french) it sucks and the way they set up their paid add-on workflow is SHADY. I wound up paying $60 for a solution that never worked and because of their small print am likely to not get a refund.
Whoever is reading this: if you are considering cloning your site for testing purposes, etc. DO use WP Clone and stay away from the paid plugins. They might have 5 stars and hundreds of thousands of downloads but, compared to WP Clone, are obnoxiously convoluted and laiden with ways to soak you for more cash.
5 stars for WP clone. You saved my Sunday :)