on several Easyjet flights with my infant daughter, the cabin crew have been an absolute delight
I don't have children, but I do fly Easyjet a lot, and I've several times observed the cabin crew deal very artfully with obstreperous small children by pulling out a small toy they stashed earlier, or distracting them in some other way. EZY cabin crew also have no compuction about ordering other passengers to move around such that families can be seated together in an arrangement that minimises stress. You could make that more smooth by paying for "speedy boarding" and asking the gate agents if you can board together near the front, I think they'll accommodate that too.
I rank Easyjet pretty highly for flying with children as well, both for the parents and for the non-parents.