Worst crowds-early April or early June?

[cadburysmom]

I need the help of experienced DISers! My DS9 and I can visit WDW either the first week of April or the first week of June. Which week is the least crowded or are the about the same? I would prefer April to avoid the summer heat but I'm afraid going during Easter break would mean more crowds. The room rates are definitely higher in April but I'm itching to go!

thanks for any advice!

Mom from NC