i also found the 2 of 4 setting on the whiteline front to be spot on. 1 also am using 8kg/6kg with kyb agx shocks.(cheers lawson). the only thing i found with the whiteline sway bar was that tyres rub due to the bar coming over the castor rod where as the trd sway bar goes under the castor rod.
but it's like sam said what works for some won't always work for others