Better than an S2000? I'm starting to think it won't be. Think RX8 with a better motor. Considering that my S2K is modded to fit my body size and driving style, I doubt I would every choose the FT-86 over it without a couple mods.
My advise: keep the S2K for the money and if you have some extra, get a different type of vehicle (muscle car, luxury cruiser, TL-S for me

) that your are interested in. Down the road, pick up a used FT-86 in addition if you decided you like it.
But I'm a collector, you may not be. I'll never sell my S and would like to add a FRS or Cayman to my collection.