I have been riding eggbeaters for years now. I have finally come to a point where I wanted to go with a road shoe to increase stiffness and reduce weight on my feet. In spite of the walking problems it creates for an amp, the shoes are working out great....the cleat adapters on the other hand, not so much.
I decided to try the Crank Bros Quattro adapter. They broke on my first ride as well as allowing to much side to side wobble and float. They actually released on me several times just from my (good) ankle turning too far, since I am using the standard Eggbeater without the platform the Quattro has to eliminate that issue.
I have tried the SPD pedals, but don't like the release and lack of float. The SL version apparently only allows release turning 'out' with the heel, and I must be able to release in. It appears that the only option left to me is Speedplay. They offer float, release in and out (so far as I can tell), and seem to be easy to get into regardless of pedal orientation unlike the SL. I was looking at the Light Action pedal and wanted to be sure I was not mistaken in thinking it may be the only road pedal that offers all I want.