I like Lemon Drop quite a bit better. It's moderate AA (5-7% IIRC) and is lemon/citrus/herbal/slight pine where El Dorado is mostly Jolly Rancher candy to me. Lemon Drop works well in American styles , but would work great in a saison, too. It's another new hop I think is gonna catch on. Good stuff.
EDIT - Though the new Stone Delicious IPA uses a blend of the two hops and is very good. The sweet candy character of the El Dorado gets balanced out pretty well by the Lemon Drop.