The original Flite Ti has about +/-1.5cm less "setback" potential than the SLR Ti. That's with the back of the saddle set the same for both, which for me yields the same seated position relative to the BB. In other words, mounted on the same frame, the SLR has about 1.5cm rearward adjustment left whereas the Flite is set right where the rails begin angling up to the nose.