White Label's White Rhino has made my life pretty easy for the past few years. Back in the day I remember Serious Seeds' AK47 had an abnormally high calyx/leaf ratio as well. Haven't purchased seeds in a while though so I can't say who currently has good stock. Things change, you know.
Jack Herer is another unfortunately I don't have any pics of her atm. I am also growing NYCD which looks like it will have a nice ratio, but I haven't completed a grow of her so I can't say for sure.