You might want to check out the Light Cycling RF10, a new frame inspired by the Tarmac SL9.
Keep in mind that the stack isn't any higher than the SL9 and no one here has actually tried or tested this frame yet. That said, everyone would be thrilled if someone picked one up and shared their feedback.
If you prefer a beefier frame, options like Light Carbon, ICAN, or Avenger are also worth considering.