"Vertex Ray is excellent supplier in every sense of the word, as the result of his work is not just an application that meets the objectives but the whole creative process is excellent, giving an extra in each stage without neglecting costs and times, performing with creativity and technical expertise, achieved such excellence in the final product and cordial relationship with its customers, indispensable component in the modern conception of application development, where the boundaries between client and provider responsibilities are impossible to translate into a contract and where the friendly and constructive is the essential component for achieving excellent results "