My Picks Are
In my opinion, Snagit is easily hands down the Best of the Best for screen captures! It has by far the best interface and the most features and easiest to use. The next closest would be Screen Hunter and Snap it but they look like they are from the past compared to Snagit! Seriously, no bull. Nothing more needs to be said!
Do yourself a favor, just get Snagit! The others simply pale in comparison after it.