I must explain on the W series.
Is an anti left driver shaft -1
Set up for a draw keeps it straight +1
draw based head +1
1+1-1 = awesome baby draw ;)
I love the Yammy 4.6 or 460 series, they are better than most current heads. feel is superb.
Haven't had any time with the sigma, might have a look at one of those, am super keen on Craigs setup in the 7D but half flex softer