Agree, RGP contacts have worked well for me since they were first introduced on the market.
U can consider about LASIK if possible. I hope my power degree will increase very little each year, so I can perform LASIK.
Unfortunately, I don't think your prescription can be stabilized by any contacts. It was my experience that RGP contacts provide the sharpest vision for high myopia with astigmatism. Consult an eye care provider who specializes in contacts to find out what would work best for you.