Recordings on Windows Help

So this is embarrassing but when I sat down to record Silent Flame Scened (windows FP9 physics) I realized I don't actually know what screen recording software is best. I've used hypercam in the past but that was a loooong time ago and I know it has the watermark though the version I used before didn't seem to? But I'm guessing there are better programs out there now?

Also I need the windows to all be EXACTLY 960x720 so I can record in 4:3 because that is the aspect ratio they were framed at (before youtube was widescreen, heh) and I need to make sure the recording is EXACTLY the size of the window or else the mask splits won't align perfectly, anyone have any tips on that?

Thanks in advance

i used to use Camstudios, which was fine for me in the past.

This site explains top 5 screen captures for windows, hope it helps
http://www.hongkiat.com/blog/win-screen-recording-softwares/

ended up using OBS (dap's suggestion) and a program for resizing I found, think it worked pretty well