I like how it's very easy to use, you can configure your products with just few clicks! It has an amazing user interface which makes everything more clear for me as well my customers (and even colleagues). The support of this tool was really good too - they always help us whenever we need them :) There are some things missing from their list but nothing serious or important so far :D We have been using rep con since couple years now without any problems at all! Highly recommended if what u want do solve configuration issues between customer & supplier side quickly ;).