PFS is slightly faster than SFS and it has a very good repairer, PFSDoctor, which has saved me in too many occassions. And keeps more deleted filed to undelete than SFS. Both are much faster and more reliable than FFS though and SFS has the advantage of being free. Both though will likely produce errors if u have to many directories with too many files in them in one partition. So be carefull with that no matter what fs you choose.
