I've worked with Si3 Digital for 2 years - initially on website development, but more recently on social media marketing in Dubai. Above all - their customer service is exceptional. If I had anything come up they were quick to respond almost within an hour. We've had a number of other firms complimenting our site and asking about the developer. Also, we had a lot of success in our marketing - I mostly appreciate their transparency when it comes to cost - no hidden charges. Highly recommend!
Their package prices are what I preferred over other known agencies in Dubai.
I don't think there is any area of improvement since the services I got were perfect