Allianz insuring a WRX?!?!?! Well there is a first for everything!

Insurance Brokers usually only stick with main stream.
Have you seriously tried them all?
Just cars for instance?
Also i would like to know what RAC said to you, I know shitloads of people with RAC including myself when I had the WRX, they were absolute champs to deal with, gave me a choice of repairer/mechanic and were cheap as!!