Best Insurance Company for Porsche Collection

Hi, I have a small collection of pretty rare air cooled Porsches; 73RS, 993RS, 964RS, 959, 2.2 911S, 57 356A Carrera GS/GT, 1965 911.  Also own current Porsches.

Hagerty wont insure my cars in South Florida.  I use another insurer.  Clearly, I pay a ton for insurance which seems high for my collection since they stay safe inside a climate controlled and very safe space and also rarely used cars since I have quite a few in rotation.

I'm looking for solid alternatives -- very good rated -- insurance companies to give me a quote.  It seems like free money leaving my pocket each year knowing my usage and amount of cars I own.  Any and all advice is welcome.