It is a bit hard to say which one I like most,because all of them have value.However,personally speaking,I prefer the Saturday and Sunday,with following reasons.
Firstly,it is clear that Saturday and Sunday is the time for me to relax,which is totally critical.I likely become crazy if I keep working at weekend.Then,It is particularly the time for me to make a reasonable plan for my study of next week,as I am always stick with my own timetable which bring me a sense of fulfillment.