I have to decide. I have never owned a zr only zl's. I weigh 230 # and ride trails 80 to 90 % of the time then like to take the rough way the other time to get a little excitment. What about the position sensitive rear shock going into the sabercat? Is this a new thing like the infamous SS setup that went the way of the dodo bird? Has this shock been time tested? Which is going to need more attention, the sabercat or the firecat as shocks go? I am leaning toward the F6EFI right now but just am wondering which I would be happyer with.