I like how easy it is to use, you can set up alerts in minutes! You don't have many options if things go wrong with my system because there's no support from this product so be sure what type of service they offer before purchasing their products.
This does not give me confidence when using them as an admin/sysadmin at work since we're always worried about our servers crashing or being hacked etc.. It would also help knowing more details such as pricing plans offered by other companies who are similar but better than unix health check (more features). We've been able to find some problems quickly which has saved us time otherwise spent trying to fix these ourselves.