Standup Screw Gun
Using screws for decking or subflooring prevents squeaks better than nails. Unfortunately driving hundreds of screws is slow compared to nailing with a framing nailer. But a collated screwgun, like the Quik Drive Pro 300 from Simpson Strong-Tie is a great equalizer. It’s also a lot easier on your back than a nailgun because it has an extension tube so you can use it standing up. Although this video focuses on the Quik Drive model, similar tools are available from Pam, Muro, and Senco, and their operation is similar. The video also shows how you can use the built-in screw depth adjuster to ensure the screws are properly countersunk, regardless of the material type and density.