I tried Famous but unfortunately I had a huge payoff awhile so they refused to touch me (which I think is rather illogical).
Youngandcool have a terrible excess though although they told me if I did a defensive training they'll reduce it by a thousand. Which btw, the normal excess is 2K. But they're ok with mods etc.
Shannons didn't want to insure my car or any imports (strangely), and told me they only wanted to do marque cars.
Justcars...as usual gave me a ridiculous price. I'm 29 btw, and on rating 3 as I haven't driven here for long.