You maybe right troup, but the old model is sold to me as new with the Schott glass and locking eye piece from the company , it came as the old new stock per schott model lacking locking eye piece( for almost same price). One would not know if theirs is the current model or the older one safe for the locking eye piece, the old and new model looked the same from outside. They even weight the same, hence, i think they did not change the optical design on the bino. Some of the top end bino's do not say using schott glass, such as Nikon EDG. You can have schott glass and still have poor image quality. You may not need schott glass to have top quality scope or bino( my mamiya 7 80mm lens does not have Schott glass, but the image quality blow away my hasselblad 500cm 80mm zeiss lens. which has schott glass). I wold not give them another chance since they sort did a bite and switch on me. I called on them, all they said is to return it for refund, which i did. What Swaro bino did you have Troupe? i have 10x42 slc made in 2012 and 7x42 made in 2002. The Tract bino 8x42 was too far behind as far as image quality goes compared to my two Swaros, i hardly can believe exchanging to one schott glass on the Tract 8x42 will make them World class bino. Compared to my two Swaro's, the Tract 8x bino lacked both contrast and resolution, also the tract's color is more cool( bad for nature or birding) than neutral. Against back light, the Tract image is washed out, while SLC10x still shows a lots more detail. Then there are factors such as you get what you pay for. Cameraland was running a Steiner 8x44 wildlife XP bino for $450, now, that was a great deal.