I'm with John on this, while it took a little time, I'm now much more precise with the non SLE leading edges revs than I ever was on an SLE equipped one. I also prefer all nylon sails.
But, either one is a great kite, as is the Spirit Quad that Dorsal mentions.
Keep in mind you can always add an SLE to an EXP, or, get the thinner LE for an SLE.