OBS is better in bandicam in every way.. its 100% free without any limitations.. However it requires more of a setup than bandicam but nothing a short you tube video can help you start off
[setup as in messing with the options and a decent computer]
i like it because it recorders in higher quality (but u can put it lower if u rush) has no logo and can even record multiple monitors
it also has something called "scenes" which u can create your self and use on the flash (like zooming) so in 1 click you can zoom an amount you set and where
I record using this but sadly my 0.4 upload speed limits me to uploading here.. also since i record at max quality my file sizes are bigger