I have the Razor 12x50's and they are really nice. I have several friends with Swaro EL either 10x50 or 12x50's. During daylight hours there is no discernible difference between my Razors and the EL's, at least not to my eye.
Where Swaro does start "to shine" (pun intended) is in the very earliest and very last light. They simply gather a little more light when you may need it during hunting's first and last light. I love my Razors, but I'm often lurking around here and elsewhere when I've got a few extra bucks in my pocket to replace them with EL's.
If you want to squeeze out that last 5-10 minutes of glassing, you may want to spend the extra dough. My .02.