Hmm, I’ve been considering going with a steel and brick arch floor system like they do in Europe. I hate squeaking
Discussion
Squeaking come from nail missed through plywood to joist. Nail rubs the member. It can also happen with a good nail with floors with bad deflection. A floor truss can be engineered to have low deflection and you can glue the flooring along the joist and nail it. It won't squeak. You don't even really need the glue with low enough deflection.