The fact it has so many different features which can be organized in any way we want! It's easy for my clients who are not computer savvy at all (and I'm one of them) because there aren't too much steps involved when using this software; once they know how it works everything just clicks into place!! If your looking for something simple with no frills then go elsewhere but if you're like me - someone always willing/able to learn new things as well have fun solving problems without having to call tech support every time-this product will fit perfectly. There isn’t anything i dislike about KENNLMgr aside from maybe some minor glitches here or there. We use Kenlmanger mainly to schedule our dogs out during their off hours while also being able view payment history after each dog goes through its stay allowing us more control over invoicing & collections issues.