Like many others posting reviews, I bought this unit in response to the 2020 TP shortage.  I found the installation to be straight-forward, though a shorter wall-to-tank hose, or better yet, a design change to utilize the existing water supply hose and installing the tee at the  tank would simplify installation and reduce the number of connections that could possibly leak.  The bidet performs better than expected, and like other commenters, I'm wishing I had bought this long ago.  It seems now there is a 2020 bidet shortage developing, but when this is a thing of the past, I will be buying two more to install on my remaining toilets.  My family of four is loving this thing.