Eggbeaters are great. And the 4ti are light.
but... gold! can do better.
Start with 2ti
Basically throw away everything but the wings.
Custom titanium spindles (Ti6Q2).
Al-bodies by hardwaretuner.
And with ti-springs by tune and silver caps from the rebuild kit
we end up at 152g, 17g lighter than the 4ti and much much nicer :)