Sheetcam is basically for 2.5 D stuff, but you can get very creative with it. My other CAM's that I sometimes use is Dolphin for turning. Old version. I have no need to upgrade it. Cut 3D from Vecctric, which does full blown 3D stuff, but has a few limits to it. Quirks you might say, but most can be worked around.
Then I use VCarve Pro. That all pretty much rounds out all my CAM and I haven't had a need for anything else.