SFS is all a mess i think... Even now stuff in the system partion is saying HD0 has a blockid error in block xxxxx expected blockid 0x424e4443, but the block says it is blockid 0x6a727778,
SFS works fine and i've been using it for over 10 years. People that say stuff like this usually don't bother to read or understand the docs or set it up right.
It sounds more like you made the mess of your sfs install

theres some good benefits to SFS, like speed,long filenames,tolerance for large drives etc.
mech