I've come to that conclusion as well, based on everything that's been revealed. I originally thought the least risky would be the astrazeneca vax, which is as close to a "traditional" vaccine as you can get, but
subsequent information about the effects of the protein spike itself on the body has made me reconsider that position. Vaccines designed to express the spike by themselves will cause vascular issues and clotting. The mRNA vaccines
should avoid that by prompting the production of the protein spike in places where it won't cause damage. As long as the spike stays where it's meant to be, the body generates an immune response to the spike and the worst you get is an inflammatory response. The problem comes if the spike somehow escapes into the blood stream and starts binding to things.
I mean I still don't trust any of these corona vaccines. They're introducing an active pathogen into the body, one that now seems to be the primary cause of the worst symptoms; for someone my age and general health, they appear to be more dangerous than just getting the virus. However, if I were forced at gunpoint to pick one, I'd go with pfizer.