I have used their services for multiple years now, which made me very comfortable with them as they are my partner in this service-based relationship! What impressed us most about working together was that while we were both striving to create great content at all times--we didn't always agree but our collaboration created quality results every time!! This includes optimizing websites/pages when needed or building out new ones from scratch (or even just improving existing pages).
It has helped us grow our business by leaps & bounds, we are now recognized as an industry leader in this space with many happy customers who have used their services for years! I can't think about anything that they've done wrong or could do better at all - everything was great from day 1 to today!! Our website traffic went up significantly after working together (website ranking improved too), more clients came through my door which means increased revenue overall so it really paid off well.