I have the Easton EA90 SLs as well. I got them as "new-take-offs" on ebay from a local seller, $430 shipped/Buy-it-now. I was happy with that!

I've ridden and raced them exclusively on my bike for this past year, around 5,000 miles on all sorts of terrain. I have even done a few long-as-hell rides with over 10-15 miles of dirt/gravel roads. The wheels (knock on wood) have been bombproof. FWIW, I knowingly got the SLs because I'm only 145 pounds max and figured that 24/28 spokes would be nice and strong.

My only one issue was that I had to get the hub repacked. It started clicking (although I thought it was the bottom bracket). But problem solved by the mechanic.