facet or infinity? i am not a rich player but i have some good equipment so i decided to build a light sorc. i do over 21k with lightning as my main attack but hell is very rough with all of the immunes. i know that infinity is pretty much necessary for single tree chars, but is a facet a wise choice for a cheap substitution or is it just wasting a socket and a facet for little to no gain? thanks in advance.