I can only comment on the 10x42 El Swarovision model and the 10x42 EL Range model from personal experience with owning both. I bought the swarovision model in late 2012. I absolutely loved these binos. Very clear, great light gathering capability. I then decided to buy the EL Range in early 2014. I kept the swarovision model so that I could compare them at home side by side before I decided to keep the EL Range. To me, there was a noticeable light gathering difference at dusk. I compared the two early evenings for quite some time each night. The Swarovision model gathered more noticeable light. I ended up deciding that it wouldn't bother me enough and decided to keep the EL range and sold the swarovision. To this day, I have regretted that decision but I haven't pulled the trigger on a new set of Swarovisions. I was pretty dang close though, all I had to do was click the submit order button. The ranging capability of the EL Range kept drawing me back.