Well, I'm late on the topic but just my two cents...
I prewash and I use fabric sheets in the dryer...I HATE static ..it drives me insane! If I don't use it every little thread or dust particle STICKS to my fabric and I hate that worse than anything!
In the washer, depending on how many pieces I wash at a time, I sometimes throw some of my "normal" soap in, if its just a few fat quarters then I may just do a rinse cycle, no soap.