Now, the thing about BootMagic, is that it comes free with PartitionMagic. the good news about that is, you get it free even if you only get the crippled demo version of PartitionMagic. So, if you try out Partmagic from a cover CD, you get BootMagic for free, end of story.
To me, it seemed simple to use and i would recommend trying it, if using Windows, because it's easy to uninstall if you have problems (which i didn't, but i like to check how easy an uninstall is for anything).