Insurance has never been a factor in MSCC membership for me and I'm struggling to understand why people are getting so upset about this. In 17 years I've only used an MSCC-approved insurer - Heritage as it happens - for a short period. Neither Gott & Wynn nor Headly ever gave me a competitive quote.
There are many classic insurance companies out there after our business, I've been with RH for several years and they have been excellent. If the one in Miscellany doesn't quote you happy there are plenty of others.
That mirrors my experience. I've received lower quotes outside of the usual Morgan specialist insurers.
I've recently paid £230 for my 1995 Plus 8. Fully comprehensive with European Breakdown/recovery and £100k legal expenses. 3k miles. 6 points on license. That's with Classicline, Heritage were very similar but as I've been with Classicline before I stuck with them.