So-called SEO hosting offers a range of different class C IP addresses. Some people think there is a benefit with that when you want to interlink your sites because it makes them appear to be on different servers and therefore unassociated. Beyond that, SEO hosting offers nothing different than any other hosting service. The hosting company you choose does not boost your rank positions.
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin