bcb I use Greenshot for my screen grabs, too.
It has many quick features that you don't get with the OS screen grab tool. For example, Capture Region and Capture Last Region. Further, Greenshot supports plugins so it is extendable.
It's a great app and is available using Chocolatey, so it's very easy to install. When I do a reinstall, I use Chocolatey to automatically install about 80% of my software so there isn't even an install step for me. Greenshot is as available to me as the OS screen grab tool.