I wouldn't suggest paying for the full version unless you've tried out the free version first and like it. Recommended if you don't mind the limitations of the free version, (watermark + 10 minute limit). It's lightweight so it doesn't slow your PC down, and there are a ton of file size reduction options so you don't have to deal with massive files, if you don't require ultra high quality.

While it doesn't have the same kind of customization as a software such as OBS, it certainly does the job. Bandicam Screen Recorder is far more fun to use for my client interview needs than Screenflow. I believe it is still a one time payment, and it is worth it if you're looking for an easy to use recording software. The full paid version contains enough features to record your screen well, as well as webcam, HDMI devices and game capture cards.

You also should be aware that if you do not pay for the full version, your videos will have a Bandicam watermark, and you will be limited to 10 minutes of recording time per recording. I've been using Bandicam for many years to record my YouTube content, and I can say with certainty that it is not the best screen recorder available, but it is good as a beginners stepping stone. Average screen recorder, but there are better.

Bandicam review 2017