SFS is nice enough (I use it a lot - except for my SYS: partition)
BUT!
make sure you are not using write caching on your HD. And with that I mean to turn off the drive firmware caching.
I got bitten by that once (when the disk lies and says it has written to the platters, but it hasn't and then *crash* or simply write reorder before a boot) resulting in a puckered SFS filesystem.
Getting write cache _really_ turned off was a bit of a {bleep} though. I had to combine two scsi tools and info from the drive manual (standard scsi page setup though) to fix my 18G drive.
Turning off write cache is a good idea whatever filesystem you use IMO.
