I have been using Marking Impression's services for over 2 years now. Their team are extremely professional but very personable as well. The only thing that comes to my mind at this moment would be their pricing structure which can sometimes seem expensive; however it has always proven valuable to our business so far. We use them mostly for email campaigns (both targeted & segmented) but they do also offer some SEO package services as well! The service quality of this firm was amazing! I never felt like it was too pushy or that they were trying to sell me something. They really listened to our needs as well as provided suggestions about what could be done better. It's hard to find someone who listens so closely without being sales focused but these guys did exactly that. We have been working with them since 2015 when we found out how much money we had wasted not realizing there are more people than just us buying product online (eBay).