I might be the author of the plugin and my opinion could be considered biased by those who read this, but I am going to post an honest review of the plugin.
WordPress EZ Backup is easy to use & for the in-depth functions it requires to perform its job it works on a fairly universal basis.
Different web hosts will have different setups for their Apache, PHP & MySQL services. WordPress EZ Backup attempts to be compatible with as many hosts as possible. I have been using EZ Backup on all our sites since the day I wrote it. It has come a long way with many improvements in its routine & I try to continue with updates.
The plugin works great for me and my clients.