Our handheld bidet began leaking so we took the plunge and purchased Bio-Bidet's BLISS BB-2000. 
Installation was a breeze and all necessary components were included. Installation (including removal of toilet seat and old bidet hardware) took about 10-15 minutes. I used an adjustable wrench to make sure the connections were tight.  
It's such a soothing experience that going anywhere else legitimately feels like a hardship. 
We're doing a home remodel next month and are purchasing a second Bio-Bidet Bliss for the second bathroom.
It's one of those little things that adds an experience unique to your own home.