I use LoiLo, but it doesn't do multichannel sound and also, you can't see the mouse cursor either.
I use Open Broadcaster for streaming but I don't rate it for plain record, although I should probably play with it a bit more.
I tried DXtory, as Star uses it, but it struggled to write to the disk at a reasonable rate, where the other applications did ok, although I'm going to try it writing to my SSD and see if that improves things.
EDIT... oops you said screenshots, sorry, went off on a tangent! I would use Entropia Tracker also.