The ET2 was actually a pretty common pairing with SOTA Star. But I had one on a Merrill Heirloom (a much jumpier suspension), without the silicon damping, and it was very nerve-wracking to use! From what I could tell the ET2 sounded pretty damn good though. Just more of a hassle to use.
I got my Star III with a Fidelity Research FR64fx and it really feels like the perfect partner. Looks great too! Since then I’ve got a Clearaudio that supports multiple arms and I’ve played with Graham Phantom and CA Universal - but I prefer the sound of the 64fx with most cartridge combinations.
I’ve since had the Star rebuilt as a Nova V, and kept a 64fx on it. Wonderful match!