I've only used Femara myself, and I didn't think it was as great as most people make it out to be. Then again I was using a liquid version, so I don't know how accurately it really was dosed.
I have always been pretty vascular, though it got much worse when I started using aromatose inhibitors, and also started doing alot more forearm specific work...Add that to my lean body (7-9% bf year round)...But I have this type of vascularity in my quads, abs, calves, front delts, even on the front of my lower legs etc...Its too much imo really...