Recommendations Requested For Video Stabilization Plug-ins/Apps

I have some rather shaky video clips taken with a mirrorless camera. I have been experimenting with the stabilization feature in FCP X as well as a trial version Coremelt's Lock & Load plug-in. So far I have found Lock & Load to produce smoother, less-cropped footage. Before ponying up money for Lock & Load I would like to know if there are any other video stabilization apps or plug-ins that can give similar or better results. Recommendations are welcome.