No longer have Thiel 3.5s, reference speakers in their day. Did use MIT 330 ICs & speaker cables with them. Still have and use them with older ProAc / Forte' ( Nelson Pass ) system. Very Musical! Can't bring myself to part with this system. MIT cables are great match for Pass Lab , Threhold , Spectral gear. Expensive but if you search this or other sites you can get them. At bargain prices? I have tried Many cables; home brew - AQ, Transparent, Kimber, on & on. Keep coming back to MIT ( the more expensive) ones but they keep doing it for me.
Soundstege, images, frequencies, (Have never found them rolled off) midrange timbre, consistently bring me closer to the real thing. MITs "middle of the road" cables are just that. MIT 330s were a top cable in their day just like Thiel 3.5s .