B.K.
I have done both and if I could, I prefer the 4 days. It's so nice to have that extra day off during the week with either Wednesday off midweek, which is what I did or a Friday or Monday for a long weekend is nice too! You could always have your child/children there 5 days if you can afford it and have that extra day to do any errands that aren't so easy to do when you have them with you! I do miss my four day work week and hopefully someday I can return to it.