Recently my buddy has been considering a FS bike and he's been trying to talk me into getting one as well, but I'm not sure about buying a FS when I have a relatively new HT. Right now I have a 2009 Rockhopper 29er and if I would get an FS I'd probably go for a 26" Stumpjumper FSR. Is an FS really going to give me a different riding experience to justify the purchase, or should I just spend some money on a Road bike and a few upgrades for my HT?

I typically ride some steep washed out atv trails, rocky hill sides, and some single track here in PA.