What I read here http://www.speedplay.com/index.cfm?f...me.lightaction mentions the light-actions are geared to the 'beginner/casual/recreational' type of cyclist. Easier entry and exit. The cleats look different and probably are. I've used X2s since they first came out, and now have X1's, and find the X pedals so easy I don't see why they need to be made easier to use. They also weigh more than the X1/X2 pedals. I haven't used the LA pedals; I don't think they existed when I first bought my X2s. While I wish my X1s came in white, I don't think it is important enough for me to downgrade to LA (weight and construction).