As I mentioned in a previous thread, where I ride is extremely rough. (rocks, roots, etc.) And I've talked to guys who ride hardtails and they even say it's rough on them. If the trails you ride aren't like that it might not make much difference. But personally I like the FS.
I would like to hear, (not being a smart-alec) but I seriously would like to hear what the advantages are of a hardtail. I know a lot of people ride them and would like to know why. (In case my wife ever lets me buy another bike.)