I like how easy it made my job so much easier to be able find just what you need, right when we needed! None at this time that i can think off but if there were any issues they would probably get fixed quickly in order to keep their customers happy with them!! If your looking into purchasing or using software such as concorapropertyinventory then yes do look towards Concora Property Inventory Software because its amazing. The ability to search through multiple sources in one place, easily find all information related to that device/part number or supplier. Also nice being able to navigate between vendor parts books as well which other vendors will not have access to. I would like an option where you can add your own notes within each part book page instead of having it be just numbers 1-16. Being able to look up my customers devices at anytime without needing to pull them from their database into our system was huge!