I've got to say I am a fan of the original Edge and Lo-Pro, but neither have nearly the trem return and intonation of all the Edge Pros that I have had the pleasure of setting up lately... they are just perfect. There was a bad batch of them however when they were first released, but aside from them, I'm an Edge Pro fan all the way!
...I think too many people have some sort of emotional attachments to the original Edge trems or something...