Swarovski SLC 58210 VS original EL 10x42?

I just picked up the SLC just discontinued 58210 with SWAROCLEAN, SWAROBRIGHT, SWAROTOP, SWARODUR Coatings. I'm thinking of replacing my original style EL model from 2004 with Swarobright, and selling the EL's. All I have done is compare in my back yard, and they seem to be equivalent. Does anyone have experience in the field with both? I'm going to sell one or the other but I trying to figure out which is best and what the value is of each respectively. Any ideas?