I have been working with them for over two years now, they are very knowledgeable about SEO in general as well as Google Analytics specifically! They take into consideration your business goals when implementing any changes to improve rankings or traffic flow through website analytics data points (eCPM). There was never an issue that we couldn't work out together via email/phone call if needed. Their rates were fair considering their knowledge level within this field - not too expensive but also worth it because you know exactly what works best without spending hours trying different things yourself.