I used to edc a Swisschamp, many many years ago, and it had the OLD magnifier glass.
Nowadays I edc an Explorer Plus, with the NEW magnifier.
Would you believe me if I told you I can't really tell the difference?

All I can say is that the newer one is quite wider, that is true.
Unless you're looking for a specific version (maybe you're a collector, I don't know that), whatever you pick you're doing the right thing.