The ability to interact with customers and understand their needs. The team is always willing to listen to the customer and improve the product, we have customers who are very happy with it. Great product. The tool works very well and is easy to use. The tool has been a tremendous tool for us. There is nothing we dislike about the tool. There has been absolutely no issues with the tool. The ease of use and the features make it stand out from the competition. We are able to perform simulations more accurately by using the software. The software has been easy to use for our engineering department - nothing! It does what it should do very well as far as I have used this sofar (4 months). There may be other products out there with better features but we are not looking at those right now until they get more mature like radiesis or something else maybe? We had no problems implementing radsi into my previous employer's system where i was working before joining here- great transition from one user interface/feature set up etc.,.