Only two key points.
"They output clean water and they don’t leak. What else can I say about these things? They do what they’re supposed to do. As for installation, nothing you do working in a under the sink cabinet is fun! But if you compare replacing these to replacing a garbage disposal, then yeah sure, these are pretty easy. Just be sure you have a container to put underneath them and plenty of rags to catch and wipe up all the water that’s going to spill out when you remove them."