I would pick what I know best and get the product out with that. Or better: I would pick the most popular framework I know best. Most known and good frameworks

I would pick what I know best and get the product out with that. Or better: I would pick the most popular framework I know best. Most known and good frameworks can do what you want. If the product becomes succesfull, scaling up your team with good engineers is harder than scaling the product. As long as you can do raw queries on your complex database, I do not see how a backend framework you don’t know yet will help you. You will sell the product, not the framework it is running on. If your current stack is still widely used in the industry, focus on the product, not on new tech Small addition: if it is for hobby or learning: pick one new framework and keep the rest of the stack.