I agree. I used to use BLF Insurance for my home and they were bought by BrokerLink. After the acquisition, I just found their access to products went down. I just moved my house from BrokerLink (who used Chubb to underwrite) to DesJardins and saved about $3000. That includes Earth Quake coverage.
For my Commercial Res properties I go through MyCor which has the best rates I have yet to see. They underwrite directly for Arch.
For my commercial non-res, I used Oegema Nicholson here in town.