The green version of the 510c arrived (I returned the red as I initially meant to order the green version- don't drink and buy expensive **** online kids). I am glad that I did return the red version; the green just adds something, something that is hard to describe and put your finger on, it just feels good (I very well could be exaggerating this).
AWESOME set up!! I prefer the green dot myself than the red dot. The green dot is much soothing to the eyes (IMO).