Ease of use once you fully understand how it works! With so many other breeders out there this one stands above them all in my opinion. The customer service here has been second to none as well with everyone being nice helpful people. I have had issues with their product but they were able fix those problems immediately upon notification! It does what its suppose too at an amazing price point which makes me happy especially since we're not paying monthly fees like others who are charging much higher prices than us. The ability to view all dogs at once in one window would be nice instead of multiple windows open so you can see each pup as it's born or gets picked up from birth through weaning (the time when they are ready) I wish this was available years ago! We have been able to keep track easier than ever before with BCP now - no searching around our database trying to find specific information about any puppies/dogs!!