Sorry bro, I'm not too familiar with screenium, a quick google should get the answers though.Now I wish I made a poll including all the screen recorders for Mac Although based on the comments it seems ScreenFlow would probably win. Also, I am new to recording, but there is an option in Screenium that allows you to record a compressed video or lossless video. I have being using the setting "lossless video," so would compressing the video have any effect on its overall quality?