You should give FreeBSD a shot sometime but it is probably not the best choice for a laptop honestly. If you do want to try it, maybe give one of the desktop FreeBSD distros like GhostBSD a try.
If you already like Debian, why not stick with that? If you want to try Mint, maybe Debian Edition ( LMDE ) would be a nice compromise.
More up-to-date packages can be an advantage. One, they may have features you need. Two, there may be compatibility issues. This is especially true of dev tools and the graphics stack. The packages in Debian Stable are not that old yet but they will be.