We have both, SV from 2012 and earlier 10x42 EL’s from around 2003. The SV is a substantial improvement in clarity across the whole field of view. The only drawback is it weighs a few ounces more.
We still like the old EL and use it in the kitchen for checking out “whatever” down by the river and up on the mountain nearly every day. But it doesn’t compare optically to the SV version. I’d rate the SV as excellent and the older set as very good.