Porsche 911 - Tried these guys at all? any good? - fewleh

Hi. Was trying to get insurance for my new motor yesterday.. came across these guys - city insurance. Are they any good? Anyone use them? I got a good price from them.. but not sure whether to go ahead or not. Appreciate any feedback! Found them here:

www.cityinsurance.co.uk/porsche_insurance.php

Porsche 911 - Tried these guys at all? any good? - Auristocrat

Brokers rather than direct insurers. Limited reviews on the web - came across 3 (2010, 2012 and 2013) using Google. I'd be inclined to find out which insurance company the insurance would be placed with, and look at their track record as well.