A room in the house is being redecorated including new flooring. The old floorboards are very creeky and need to be replaced. I believe they are screwed in timber planks. Possibly from the 1970s. Would it be possible/recommended to replace like-for-like with timber plank floorboards or would sheets of plywood be a better choice? The final floor may be carpet or engineered wood, it hasn't been decided yet.