ok, i am about to order a set of pups for the 6strings neck thru bass i am building. i am not too sure which of these three pickups would work best for me they are all Delano's soapbars: quoting his email 'The basic sound is the same as the SBC 6 HE. Because of the option (pre wired) of "cross coil using" you have a natural single coil sound wihout hum.' ok so i have these three options the SBC6 HE/S http://www.delano.de/english/ct41.html the SBC6 HE/S-4 http://www.delano.de/english/ct45.html and the Soapstick which is not available on their website but i have its description written in his OEM Price List: 6 String Twin coil in-line humcanceller pickup the S-4 pickup is cost 50% more than the other two pickups which are the same price. i just need to know if that price difference is justified or not. i was initially building a single pickup bass but since Duncan have sent me information to reconfigure their preamp, i can use two pups now. i am looking for maximum tonal varieties here with the Duncan 3 Band Tone Circuit. the HE/S and Soapsticks, can they be operated in Series/Parallel/Single? if not, how can they be operated?