Citadel is a reputable company. A competitor and freind installs their system.

Polyurea or Polyaspartic systems are very strong and very durable. They are a great solution for garage floors but not the only one.

Not all concrete are the same and most cannot be approched with the same solution. This is why many industrial resin companies have many, many formulations.

From my experience, polyaspartic systems work best on newer, less damaged slabs. The reason is that most 1 day polyaspartic sytems are paper thin and do not cover flaws very well.

Properly installed, you should have a very durable, easy to clean, low maintanance floor.

Good luck.