We own a couple very large sites that have been hosted on the same ip and hosting provider for 6 years now and have really outgrown our current setup and are looking at another provider to move our servers to.
The ip ranges are clean as far as we can tell and there are several fortune 500 companies in the same datacenter. Does anyone know if changing your location after such a long time will have negative aspects in regards to Googles new algos or ranking or anything bad really at all?
Changing host could be an issue for your ranking if your new host is not in the same country. No problem in google.com for a search in english, but could have an effect in local googles (for example to rank on google.fr your site would better be hosted in France).