Never threw a Freak Out, but had the previous incarnation of the Slash, the Triton Elite (Slash has stronger coverstock than the old Elite).
FYI The FreakOut is a polished particle pearl (some length, strong overall hook), while the Slash is a solid, rough/matte finished resin (smoother, earlier, decent backend, probably handles slightly more oil). Major difference in coverstocks and surface; hook shape will look fairly different with similar drillings; oil handling abilities might not show a large difference.