Had Focus 2.0 Zetecs for over 3 years now. I have tried all the big insurance companies, and elephant, admiral, esure, AA, Tesco, Ford etc. Direct Line are the cheapest for me - Around £310-330 for a brand new 2.0, + wife, with NCB. Surprisingly Ford's own insurance was nearly the same price with Tesco close behind, but they didn't actually have the 2.0 on their list, which concerned me about their reliability!!
Strangely, every car I have ever insured seemed to come in at between £300 and £350 in the end, regardless of my age (turning 30 made no difference to the Focus price), or it's type!
Nick