Like many summer editions, Sander for men isn't that different compared to the original. It's lighter, doesn't last as long as the original and the citrus notes (I think it's Grapefruit) are stronger, but only for ten minutes.
I'd go for the original, unless you want to spritz yourself like ten times a day. But if you find a very special offer, buy it. It's not bad, but the original is definitely better.