Im considering building a set of irons and the TE has been recommended. Is it now ‘dated’ compared to the innovations of the last ten years?
No. There is more tech, tungsten weights, elastomer inserts, etc., But a well fit set of TEs is as good as any. Look how many tour pros hit blades. That said, the new Golfworks iron heads TS-1,TS-2 look awfully nice.