If I wanted to go on FantasyLand rides, and I was willing to get to the park gates early (15-30 minutes before the park opens - i.e., 7:30-7:45AM), I would go on Friday. Even though Fridays are more crowded that the other two days in general, the fact that there is no Early Entry that day means that the jump one gets in the morning (not having to compete with people who got in one hour before you) IMO makes up for the greater crowds later in the day.
However, if I knew I could not get to the park gates early or if I knew that I was not planning to do much in FantasyLand, I would probably go on Tuesday that week.