Bottom line is shop around. Over the last four years I've had my Archer insured through Haywards, Traffords and Visicover. The issue is not the broker as much as the fact that the worldwide GA insurance market has reduced to a handful of underwriters who are all consulted by the same brokers.
I have no issue with any of the above companies but I like Visicover for their transparency and ability to tailor cover on their website. I did try 'Flycovered' but they refused to even quote as I'd had an incident involving a claim within five years. None of the other companies are bothered about it.