VideoPad Video Editor. Fast, Low CPU Usage, Multitrack editing, and free for EVERYONE without limitations. Better than Sony Vegas or any paid program, I promise you that :)
If you like Microsoft spying on you and a very slow computer go with Windows 10. If you like low CPU usage, fast searches, fast opening programs, and mostly good gaming performance go with Windows 7, it will always be better.
For my PC I use Bandicam (Fast, Low CPU Usage, and records in 720, 60fps) and for my Xbox One I use my Elgato which captures in 720p to 1080p up to 60fps :)
720p for me personally is much better. Faster to render, still looks crisp and for games 60fps is great, if I render in 1080p the frame rate is only 30fps due to the Elgato cap :(